text: ================================================================================
  LIST ROLES;
  ================================================================================
  LIST ROLES;
  --------------------------------------------------------------------------------
  
  (source_file
    (list_roles))
  
  ================================================================================
  LIST ROLES NORECURSIVE;
  ================================================================================
  LIST ROLES NORECURSIVE;
  --------------------------------------------------------------------------------
  
  (source_file
    (list_roles))
  
  ================================================================================
  LIST ROLES OF role_name;
  ================================================================================
  LIST ROLES OF role_name;
  --------------------------------------------------------------------------------
  
  (source_file
    (list_roles))
  
  ================================================================================
  LIST ROLES OF role_name NORECURSIVE
  ================================================================================
  LIST ROLES OF role_name  NORECURSIVE;
  --------------------------------------------------------------------------------
  
  (source_file
    (list_roles))
  