code: public CreatePresetResponse createPreset(String presetName, String container) {
          return createPreset(presetName, null, container, true, null, null, null, null, null);
      }
docs: Create a preset which only convert source media file to a different container format without changing the file
  contents.
  
  @param presetName The name of the new preset.
  @param container The container type for the output file. Valid values include mp4, flv, hls, mp3, m4a.