FORBID_SINGULAR_OVERWRITES 397 third_party/protobuf/src/google/protobuf/text_format.cc if ((singular_overwrite_policy_ == FORBID_SINGULAR_OVERWRITES) && FORBID_SINGULAR_OVERWRITES 1052 third_party/protobuf/src/google/protobuf/text_format.cc ParserImpl::FORBID_SINGULAR_OVERWRITES,