code: @Override
    public synchronized void writeToEvaluatorLog(final String formattedEntry) throws IOException {
      final boolean fileCreated = this.fileSystem.exists(this.changelogPath);
  
      try (
          final BufferedWriter bw = fileCreated ?
              new BufferedWriter(new OutputStreamWriter(
                  this.fileSystem.append(this.changelogPath), StandardCharsets.UTF_8)) :
              new BufferedWriter(new OutputStreamWriter(
                  this.fileSystem.create(this.changelogPath), StandardCharsets.UTF_8))
      ) {
        bw.write(formattedEntry);
      }
    }
docs: Writes a formatted entry (addition or removal) for an Evaluator ID into the DFS evaluator log.
  The entry is appended regularly by an FS that supports append.
  @param formattedEntry The formatted entry (entry with evaluator ID and addition/removal information).
  @throws IOException