Method updateAttribute

libminifi/src/core/FlowFile.cpp:174–182

}

bool FlowFile::updateAttribute(const std::string key, const std::string value) {
  auto it = attributes_.find(key);
  if (it != attributes_.end()) {
    it->second = value;
    return true;
  } else {
    return false;
  }
}

bool FlowFile::addAttribute(const std::string& key, const std::string& value) {
  auto it = attributes_.find(key);