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https://issues.apache.org/jira/browse/GROOVY-8788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17580956#comment-17580956
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Eric Milles commented on GROOVY-8788:
-------------------------------------

One thing that would reduce the impact of this change is to add 
{{getAt(Map,String)}} extension method to step in front of 
{{getAt(Object,String)}}.

> Inconsistency in extension method selection with @CompileStatic
> ---------------------------------------------------------------
>
>                 Key: GROOVY-8788
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8788
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static compilation, Static Type Checker
>    Affects Versions: 2.4.15, 2.5.2
>            Reporter: Daniil Ovchinnikov
>            Assignee: Eric Milles
>            Priority: Major
>              Labels: breaking
>
> Given properly registered extension class:
> {code:java|title=MyExtensions.java}
> public class MyExtensions {
>     public static void foo(Object self, String s) {
>         System.out.println("Object#foo(String)");
>     }
>     public static void foo(String self, Object o) {
>         System.out.println("String#foo(Object)");
>     }
> }
> {code}
> Run
> {code:java|title=playground.groovy}
> void usageExt() {
>     "".foo("") // prints "Object#foo(String)" which is correct
> }
> @groovy.transform.CompileStatic
> void usageExtStatic() {
>     "".foo("") // prints "String#foo(Object)" which is questionable
> }
> usageExt()
> usageExtStatic()
> {code}



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