ublic Collection<PsiMethod> createBuilderDefaultProviderMethodsIfNecessary(@NotNull PsiClass containingClass,
                                                                              @Nullable PsiMethod psiMethod,
                                                                              @NotNull PsiClass builderPsiClass,
                                                                              @NotNull PsiAnnotation psiAnnotation) {
    final List<BuilderInfo> builderInfos = createBuilderInfos(psiAnnotation, containingClass, psiMethod, builderPsiClass);
    return builderInfos.stream()
      .filter(BuilderInfo::hasBuilderDefaultAnnotation)
      .filter(b -> !b.hasSingularAnnotation())
      .filter(b -> !b.hasNoInitializer())
      .map(BuilderHandler::createBuilderDefaultProviderMethod)
      .collect(Collectors.toList());
  }

ublic Collection<PsiMethod> createBuilderDefaultProviderMethodsIfNecessary(@NotNull PsiClass containingClass,
                                                                              @Nullable PsiMethod psiMethod,
                                                                              @NotNull PsiClass builderPsiClass,
                                                                              @NotNull PsiAnnotation psiAnnotation) 