anchor.diff:  //   Module parameter definitions    1.6.1.12
   //------------------------------------------------------
   
  -pr_ModuleParDef returns [List<Definition> parameters = null]
  -@init {
  +pr_ModuleParDef returns [List<Definition> parameters]
  +@init {
  +	$parameters = null;
   	Token endcol = null;
   	List<Definition> multitypedModulePar = null;
   }:
  
positive.code: 	}
  };
  
  pr_TimerInstance returns[List<Definition> definitions = null]:
  (	col = pr_TimerKeyword
  	d = pr_TimerList { $definitions = $d.definitions; }
  )
  
negative.code: 	SELF
  ;
  
  pr_FunctionStatementOrDefList returns[List<Statement> statements]
  @init {
  	$statements = null;
  }:
  (
  	(	s = pr_FunctionStatementOrDef
  			{	if($statements == null) {$statements = $s.statements;}
  