void where(String field, {
    dynamic isEqualTo,
    dynamic isLessThan,
    dynamic isLessThanOrEqualTo,
    dynamic isGreaterThan,
    dynamic isGreaterThanOrEqualTo,
    dynamic arrayContains,
    bool isNull,
  }){
    fireQuery = fireQuery.where(field,
      isEqualTo: isEqualTo,
      isLessThan: isLessThan,
      isLessThanOrEqualTo: isLessThanOrEqualTo,
      isGreaterThan: isGreaterThan,
      isGreaterThanOrEqualTo: isGreaterThanOrEqualTo,
      arrayContains: arrayContains,
      isNull: isNull,
    );
    set();
  }