anchor.diff:     ;
   
   
  +AT : '@'
  +   ;
  +
  +
   KW_SETRAISES
      : 'setraises'
      ;
  
positive.code:    ;
  
  exception_list
     : LEFT_BRACKET scoped_name (COMMA scoped_name)* RIGHT_BRACKET
     ;
  
  component
  
negative.code:    ;
  
  init_param_decl
     : annapps init_param_attribute annapps param_type_spec annapps simple_declarator
     ;
  
  init_param_attribute
  