public DUser findByEmail(java.lang.String email) {
    return queryUniqueByField(null, DUserMapper.Field.EMAIL.getFieldName(), email);
  }
public DUser findByEmail ( java . lang . String email ) { return queryUniqueByField ( null , DUserMapper . Field . EMAIL . getFieldName ( ) , email ) ; }
find-by method for unique field email
@param email the unique attribute
@return the unique DUser for the specified email