formatSetting (d) {
    this.format = this.api.getConfig(this.section, 'format', d);
    if (this.format === 'csv') {
      this.parse = this.parseCSV;
    } else if (this.format === 'tagger') {
      this.parse = this.parseTagger;
    } else if (this.format === 'json') {
      this.parse = this.parseJSON;
    } else if (this.format === 'jsonl') {
      this.parse = this.parseJSONL;
    } else {
      throw new Error(`${this.section} - ERROR not loading unknown data format - ${this.format}`);
    }
  }
{function} The parser function of the source if options.formatSetting was set to true.