NotNull
  public String getBuilderMethodName(@NotNull PsiAnnotation psiAnnotation) {
    final String builderMethodName =
      PsiAnnotationUtil.getStringAnnotationValue(psiAnnotation, ANNOTATION_BUILDER_METHOD_NAME, BUILDER_METHOD_NAME);
    return null == builderMethodName ? BUILDER_METHOD_NAME : builderMethodName;
  }

NotNull
  public String getBuilderMethodName(@NotNull PsiAnnotation psiAnnotation) 