@NotNull
  private static PsiType getColumnKeyType(@NotNull PsiType psiFieldType, PsiManager psiManager) {
    return PsiTypeUtil.extractOneElementType(psiFieldType, psiManager, COM_GOOGLE_COMMON_COLLECT_TABLE, 1);
  }
@NotNull
  private static PsiType getColumnKeyType(@NotNull PsiType psiFieldType, PsiManager psiManager)