[ 
https://issues.apache.org/jira/browse/MNG-7553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17615334#comment-17615334
 ] 

ASF GitHub Bot commented on MNG-7553:
-------------------------------------

michael-o commented on code in PR #819:
URL: https://github.com/apache/maven/pull/819#discussion_r991605833


##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/SettingsBuilder.java:
##########
@@ -0,0 +1,71 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+
+import org.apache.maven.api.Service;
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Nonnull;
+
+/**
+ * Builds the effective settings from a user settings file and/or a global 
settings file.
+ */
+public interface SettingsBuilder extends Service
+{
+
+    /**
+     * Builds the effective settings of the specified settings files.
+     *
+     * @param request The settings building request that holds the parameters, 
must not be {@code null}.
+     * @return The result of the settings building, never {@code null}.
+     * @throws SettingsBuilderException If the effective settings could not be 
built.
+     */
+    @Nonnull
+    SettingsBuilderResult build( @Nonnull SettingsBuilderRequest request );

Review Comment:
   Same question here.



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/ProjectBuilderResult.java:
##########
@@ -70,7 +70,7 @@
      * @return The problems that were encountered during the project building, 
can be empty but never {@code null}.
      */
     @Nonnull
-    Collection<ProjectBuilderProblem> getProblems();
+    Collection<BuilderProblem> getProblems();

Review Comment:
   Stupid question: Is it really a problem with the builder or a problem with 
the build?



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/SettingsBuilderRequest.java:
##########
@@ -0,0 +1,204 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Experimental;
+import org.apache.maven.api.annotations.Immutable;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+/**
+ * Collects settings that control the building of effective settings.
+ */
+@Experimental
+@Immutable
+public interface SettingsBuilderRequest
+{
+
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global settings path.
+     *
+     * @return The global settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalSettingsPath();
+
+    /**
+     * Gets the global settings source.
+     *
+     * @return The global settings source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalSettingsSource();

Review Comment:
   Javadoc does not match code



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/SettingsBuilderRequest.java:
##########
@@ -0,0 +1,204 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Experimental;
+import org.apache.maven.api.annotations.Immutable;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+/**
+ * Collects settings that control the building of effective settings.
+ */
+@Experimental
+@Immutable
+public interface SettingsBuilderRequest
+{
+
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global settings path.
+     *
+     * @return The global settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalSettingsPath();
+
+    /**
+     * Gets the global settings source.
+     *
+     * @return The global settings source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalSettingsSource();
+
+    /**
+     * Gets the user settings path.
+     *
+     * @return The user settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getUserSettingsPath();
+
+    /**
+     * Gets the user settings source.
+     *
+     * @return The user settings source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getUserSettingsSource();

Review Comment:
   Javadoc does not match code



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/SettingsBuilderRequest.java:
##########
@@ -0,0 +1,204 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Experimental;
+import org.apache.maven.api.annotations.Immutable;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+/**
+ * Collects settings that control the building of effective settings.
+ */
+@Experimental
+@Immutable
+public interface SettingsBuilderRequest
+{
+
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global settings path.
+     *
+     * @return The global settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalSettingsPath();

Review Comment:
   Javadoc does not match code



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/SettingsBuilderRequest.java:
##########
@@ -0,0 +1,204 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Experimental;
+import org.apache.maven.api.annotations.Immutable;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+/**
+ * Collects settings that control the building of effective settings.
+ */
+@Experimental
+@Immutable
+public interface SettingsBuilderRequest
+{
+
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global settings path.
+     *
+     * @return The global settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalSettingsPath();
+
+    /**
+     * Gets the global settings source.
+     *
+     * @return The global settings source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalSettingsSource();
+
+    /**
+     * Gets the user settings path.
+     *
+     * @return The user settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getUserSettingsPath();
+
+    /**
+     * Gets the user settings source.
+     *
+     * @return The user settings source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getUserSettingsSource();
+
+    @Nonnull
+    static SettingsBuilderRequest build( @Nonnull Session session,
+                                         @Nonnull Source globalSettingsSource,
+                                         @Nonnull Source userSettingsSource )
+    {
+        return builder()
+                .session( nonNull( session, "session can not be null" ) )
+                .globalSettingsSource( nonNull( globalSettingsSource, 
"globalSettingsSource can not be null" ) )
+                .userSettingsSource( nonNull( userSettingsSource, 
"userSettingsSource can not be null" ) )
+                .build();

Review Comment:
   cannot



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/SettingsBuilderRequest.java:
##########
@@ -0,0 +1,204 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Experimental;
+import org.apache.maven.api.annotations.Immutable;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+/**
+ * Collects settings that control the building of effective settings.
+ */
+@Experimental
+@Immutable
+public interface SettingsBuilderRequest
+{
+
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global settings path.
+     *
+     * @return The global settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalSettingsPath();
+
+    /**
+     * Gets the global settings source.
+     *
+     * @return The global settings source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalSettingsSource();
+
+    /**
+     * Gets the user settings path.
+     *
+     * @return The user settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getUserSettingsPath();

Review Comment:
   Javadoc does not match code



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/SettingsBuilderRequest.java:
##########
@@ -0,0 +1,204 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Experimental;
+import org.apache.maven.api.annotations.Immutable;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+/**
+ * Collects settings that control the building of effective settings.
+ */
+@Experimental
+@Immutable
+public interface SettingsBuilderRequest
+{
+
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global settings path.
+     *
+     * @return The global settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalSettingsPath();
+
+    /**
+     * Gets the global settings source.
+     *
+     * @return The global settings source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalSettingsSource();
+
+    /**
+     * Gets the user settings path.
+     *
+     * @return The user settings path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getUserSettingsPath();
+
+    /**
+     * Gets the user settings source.
+     *
+     * @return The user settings source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getUserSettingsSource();
+
+    @Nonnull
+    static SettingsBuilderRequest build( @Nonnull Session session,
+                                         @Nonnull Source globalSettingsSource,
+                                         @Nonnull Source userSettingsSource )
+    {
+        return builder()
+                .session( nonNull( session, "session can not be null" ) )
+                .globalSettingsSource( nonNull( globalSettingsSource, 
"globalSettingsSource can not be null" ) )
+                .userSettingsSource( nonNull( userSettingsSource, 
"userSettingsSource can not be null" ) )
+                .build();
+    }
+
+    @Nonnull
+    static SettingsBuilderRequest build( @Nonnull Session session,
+                                         @Nonnull Path globalSettingsPath,
+                                         @Nonnull Path userSettingsPath )
+    {
+        return builder()
+                .session( nonNull( session, "session can not be null" ) )
+                .globalSettingsPath( nonNull( globalSettingsPath, 
"globalSettingsPath can not be null" ) )
+                .userSettingsPath( nonNull( userSettingsPath, 
"userSettingsPath can not be null" ) )
+                .build();
+    }

Review Comment:
   cannot



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/ToolchainsBuilderRequest.java:
##########
@@ -0,0 +1,196 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+public interface ToolchainsBuilderRequest
+{
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global Toolchains path.
+     *
+     * @return The global Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalToolchainsPath();
+
+    /**
+     * Gets the global Toolchains source.
+     *
+     * @return The global Toolchains source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalToolchainsSource();
+
+    /**
+     * Gets the user Toolchains path.
+     *
+     * @return The user Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getUserToolchainsPath();
+
+    /**
+     * Gets the user Toolchains source.
+     *
+     * @return The user Toolchains source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getUserToolchainsSource();

Review Comment:
   Javadoc does not match code



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/ToolchainsBuilderRequest.java:
##########
@@ -0,0 +1,196 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+public interface ToolchainsBuilderRequest
+{
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global Toolchains path.
+     *
+     * @return The global Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalToolchainsPath();
+
+    /**
+     * Gets the global Toolchains source.
+     *
+     * @return The global Toolchains source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalToolchainsSource();

Review Comment:
   Javadoc does not match code



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/ToolchainsBuilderRequest.java:
##########
@@ -0,0 +1,196 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+public interface ToolchainsBuilderRequest
+{
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global Toolchains path.
+     *
+     * @return The global Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalToolchainsPath();
+
+    /**
+     * Gets the global Toolchains source.
+     *
+     * @return The global Toolchains source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalToolchainsSource();
+
+    /**
+     * Gets the user Toolchains path.
+     *
+     * @return The user Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getUserToolchainsPath();

Review Comment:
   Javadoc does not match code



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/ToolchainsBuilderRequest.java:
##########
@@ -0,0 +1,196 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+public interface ToolchainsBuilderRequest
+{
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global Toolchains path.
+     *
+     * @return The global Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalToolchainsPath();
+
+    /**
+     * Gets the global Toolchains source.
+     *
+     * @return The global Toolchains source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalToolchainsSource();
+
+    /**
+     * Gets the user Toolchains path.
+     *
+     * @return The user Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getUserToolchainsPath();
+
+    /**
+     * Gets the user Toolchains source.
+     *
+     * @return The user Toolchains source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getUserToolchainsSource();
+
+    @Nonnull
+    static ToolchainsBuilderRequest build( @Nonnull Session session,
+                                         @Nonnull Source 
globalToolchainsSource,
+                                         @Nonnull Source userToolchainsSource )
+    {
+        return builder()
+                .session( nonNull( session, "session can not be null" ) )
+                .globalToolchainsSource( nonNull( globalToolchainsSource, 
"globalToolchainsSource can not be null" ) )
+                .userToolchainsSource( nonNull( userToolchainsSource, 
"userToolchainsSource can not be null" ) )
+                .build();
+    }

Review Comment:
   cannot



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/ToolchainsBuilderRequest.java:
##########
@@ -0,0 +1,196 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+public interface ToolchainsBuilderRequest
+{
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global Toolchains path.
+     *
+     * @return The global Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalToolchainsPath();

Review Comment:
   Javadoc does not match code



##########
maven-core/src/main/java/org/apache/maven/internal/impl/DefaultProjectBuilder.java:
##########
@@ -228,9 +228,9 @@ public String getMessage()
                         }
 
                         @Override
-                        public ProjectBuilderProblemSeverity getSeverity()
+                        public BuilderProblemSeverity getSeverity()

Review Comment:
   Why isn't it `BuilderProblem.Severity`?



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/ToolchainsBuilderRequest.java:
##########
@@ -0,0 +1,196 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.apache.maven.api.Session;
+import org.apache.maven.api.annotations.Nonnull;
+import org.apache.maven.api.annotations.NotThreadSafe;
+import org.apache.maven.api.annotations.Nullable;
+
+import static org.apache.maven.api.services.BaseRequest.nonNull;
+
+public interface ToolchainsBuilderRequest
+{
+    @Nonnull
+    Session getSession();
+
+    /**
+     * Gets the global Toolchains path.
+     *
+     * @return The global Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getGlobalToolchainsPath();
+
+    /**
+     * Gets the global Toolchains source.
+     *
+     * @return The global Toolchains source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getGlobalToolchainsSource();
+
+    /**
+     * Gets the user Toolchains path.
+     *
+     * @return The user Toolchains path or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Path> getUserToolchainsPath();
+
+    /**
+     * Gets the user Toolchains source.
+     *
+     * @return The user Toolchains source or {@code null} if none.
+     */
+    @Nonnull
+    Optional<Source> getUserToolchainsSource();
+
+    @Nonnull
+    static ToolchainsBuilderRequest build( @Nonnull Session session,
+                                         @Nonnull Source 
globalToolchainsSource,
+                                         @Nonnull Source userToolchainsSource )
+    {
+        return builder()
+                .session( nonNull( session, "session can not be null" ) )
+                .globalToolchainsSource( nonNull( globalToolchainsSource, 
"globalToolchainsSource can not be null" ) )
+                .userToolchainsSource( nonNull( userToolchainsSource, 
"userToolchainsSource can not be null" ) )
+                .build();
+    }
+
+    @Nonnull
+    static ToolchainsBuilderRequest build( @Nonnull Session session,
+                                         @Nonnull Path globalToolchainsPath,
+                                         @Nonnull Path userToolchainsPath )
+    {
+        return builder()
+                .session( nonNull( session, "session can not be null" ) )
+                .globalToolchainsPath( nonNull( globalToolchainsPath, 
"globalToolchainsPath can not be null" ) )
+                .userToolchainsPath( nonNull( userToolchainsPath, 
"userToolchainsPath can not be null" ) )
+                .build();
+    }

Review Comment:
   cannot



##########
api/maven-api-core/src/main/java/org/apache/maven/api/services/ToolchainsBuilderException.java:
##########
@@ -0,0 +1,43 @@
+package org.apache.maven.api.services;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import org.apache.maven.api.annotations.Experimental;
+
+/**
+ * The Exception class throw by the {@link ToolchainsBuilder}.
+ *
+ * @since 4.0
+ */
+@Experimental
+public class ToolchainsBuilderException
+    extends MavenException
+{
+    /**
+     * @param message The message to give.
+     * @param e The {@link Exception}.
+     */
+    public ToolchainsBuilderException( String message, Exception e )

Review Comment:
   Same here





> New clean API with immutable model
> ----------------------------------
>
>                 Key: MNG-7553
>                 URL: https://issues.apache.org/jira/browse/MNG-7553
>             Project: Maven
>          Issue Type: Task
>            Reporter: Guillaume Nodet
>            Assignee: Guillaume Nodet
>            Priority: Major
>             Fix For: 4.0.0
>
>




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