docs: function CustomData() {
    CustomData.super_.apply(this, arguments);
  
    var _removedFields = null;
    Object.defineProperty(this, '_removedFields', {
      get: function getRemovedFields() {
        return _removedFields;
      },
      set: function setRemovedFields(removedFields) {
        _removedFields = removedFields;
      }
    });
    this._removedFields = [];
  }