src/main/java/org/jmxtrans/agent/util/json/JsonValue.java
public void writeTo(Writer writer, WriterConfig config) throws IOException {
    if (writer == null) {
      throw new NullPointerException("writer is null");
    }
    if (config == null) {
      throw new NullPointerException("config is null");
    }
    WritingBuffer buffer = new WritingBuffer(writer, 128);
    write(config.createWriter(buffer));
    buffer.flush();
  }
public void writeTo(Writer writer, WriterConfig config) throws IOException {
    if (writer == null) {
      throw new NullPointerException("writer is null");
    }
    if (config == null) {
      throw new NullPointerException("config is null");
    }
    WritingBuffer buffer = new WritingBuffer(writer, 128);
    write(config.createWriter(buffer));
    buffer.flush();
  }
Writes the JSON representation of this value to the given writer using the given formatting.
<p>
Writing performance can be improved by using a {@link java.io.BufferedWriter BufferedWriter}.
</p>

@param writer
the writer to write this value to
@param config
a configuration that controls the formatting or <code>null</code> for the minimal form
@throws IOException
if an I/O error occurs in the writer