Adding originatingElement to generated JavaBuild

mapstruct-kotlin-processor/src/main/kotlin/com/github/pozo/BuilderProcessor.kt

@@ -73,6 +73,7 @@ class BuilderProcessor : AbstractProcessor() {
         val packageName = processingEnv.elementUtils.getPackageOf(typeElement).toString()
         val builderClassName = "${typeElement.simpleName}Builder"
         val classBuilder = TypeSpec.classBuilder(builderClassName)
+            .addOriginatingElement(typeElement)
 
         with(classBuilder) {
             this.addModifiers(Modifier.PUBLIC, Modifier.FINAL)
@@ -110,4 +111,4 @@ class BuilderProcessor : AbstractProcessor() {
     override fun getSupportedOptions(): Set<String> {
         return setOf("kapt.kotlin.generated")
     }
-}
+}