original_string: public function getUserGuidsByRole($roleName)
      {
          if (empty($roleName)) {
              return [];
          }
  
          return (new Query)->select('[[user_guid]]')
              ->from($this->assignmentTable)
              ->where(['item_name' => $roleName])->column($this->db);
      }
code: public function getUserGuidsByRole($roleName)
      {
          if (empty($roleName)) {
              return [];
          }
  
          return (new Query)->select('[[user_guid]]')
              ->from($this->assignmentTable)
              ->where(['item_name' => $roleName])->column($this->db);
      }
code_tokens: public function getUserGuidsByRole ( $ roleName ) { if ( empty ( $ roleName ) ) { return [ ] ; } return ( new Query ) -> select ( '[[user_guid]]' ) -> from ( $ this -> assignmentTable ) -> where ( [ 'item_name' => $ roleName ] ) -> column ( $ this -> db ) ; }
docstring: Returns all role assignment information for the specified role.
  @param string $roleName
  @return Assignment[] the assignments. An empty array will be
  returned if role is not assigned to any user.
  @since 2.0.7
docstring_tokens: Returns all role assignment information for the specified role .