NotNull
  static String getBuilderClassName(@NotNull PsiClass psiClass, @Nullable String returnTypeName) {
    final ConfigDiscovery configDiscovery = ConfigDiscovery.getInstance();
    final String builderClassNamePattern = configDiscovery.getStringLombokConfigProperty(BUILDER_CLASS_NAME, psiClass);
    return replace(builderClassNamePattern, "*", capitalize(StringUtil.notNullize(returnTypeName)));
  }

NotNull
  static String getBuilderClassName(@NotNull PsiClass psiClass, @Nullable String returnTypeName) 