code: function ParserManager(config) {
          this._config = config || {};
  
          this._supportedUnits = {
              "in": true,
              "cm": true,
              "px": true,
              "mm": true
          };
  
          this._supportedExtensions = {
              "jpg": true,
              "png": true,
              "gif": true,
              "svg": this._config.hasOwnProperty("svg-enabled") ? !!this._config["svg-enabled"] : true,
              "webp": !!this._config["webp-enabled"]
          };
      }
docs: The ParserManager manages parsing, normalization and analysis of layer
  names into asset specifications. The config parameter can be used to enable
  svg and webp parsing if the "svg-enabled" and "webp-enabled" parameters are
  set, resp.
  
  @constructor
  @param {object} config