anchor.diff:    NEWLINE
   ;
   
  +s_username
  +:
  +  USERNAME null_rest_of_line
  +;
  +
  +
  
positive.code: // other rules
  statement
  :
    FRR VERSION REMARK_TEXT? NEWLINE
    | FRR DEFAULTS (DATACENTER | TRADITIONAL) NEWLINE
    | USERNAME word word NEWLINE
    | HOSTNAME word NEWLINE
    | NO IPV6 FORWARDING NEWLINE
    | s_agentx
    | s_bgp
    | s_enable
    | s_end
    | s_interface
    | s_ip
    | s_line
    | s_log
    | s_password
    | s_routemap
    | s_router_ospf
    | s_service
    | s_vrf
  ;
  
  
negative.code:   ) NEWLINE
  ;
  
  s_no
  :
    NO null_rest_of_line
  ;
  
  s_password
  :
    PASSWORD null_rest_of_line
  