martinweiler commented on code in PR #7243:
URL: https://github.com/apache/incubator-kie/pull/7243#discussion_r4406315494


##########
kogito-codegen-modules/kogito-codegen-processes/src/main/java/org/kie/kogito/codegen/process/ProcessResourceGenerator.java:
##########
@@ -357,7 +358,12 @@ protected void 
generateSignalsEndpoints(TemplatedGenerator.Builder templateBuild
                                         .orElseThrow(() -> new 
RuntimeException("signalInstanceDeclaration doesn't have body"));
 
                                 if (signalType == null) {
-                                    signalInstanceBody.findAll(NameExpr.class, 
nameExpr -> "data".equals(nameExpr.getNameAsString())).forEach(name -> 
name.replace(new NullLiteralExpr()));
+                                    signalInstanceBody.findAll(

Review Comment:
   If I understand this change here correctly, then you are trying to remove 
the body parameter from the generated endpoint if there is no data output 
mapping - correct?
   What seems to be missing here is the removal of the `RequestBody` 
annotation, eg. here in Spring Boot:
   ```
       @PostMapping(value = "/{id}/Signal__0563791", produces = 
MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE)
       @io.swagger.v3.oas.annotations.parameters.RequestBody(content = 
@io.swagger.v3.oas.annotations.media.Content(schema = 
@io.swagger.v3.oas.annotations.media.Schema(type = "object")))
       @org.springframework.transaction.annotation.Transactional()
       @io.github.resilience4j.retry.annotation.Retry(name = "signal_0")
       public HiringModelOutput signal_0(@PathVariable("id") final String id) {
           return processService.signalProcessInstance(process, id, null, 
"Signal__0563791").orElseThrow(() -> new 
ResponseStatusException(HttpStatus.PRECONDITION_FAILED, String.format("Process 
instance %s is not currently accepting signal '%s'", id, "Signal__0563791")));
       }
   ```



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