anchor.diff:  	;
   
   variableDeclaratorList
  -	:	variableDeclarator (',' variableDeclarator)*
  +	:	variableDeclarator
  +	|	variableDeclaratorList ',' variableDeclarator
   	;
   
   variableDeclarator
  
positive.code: 	;
  
  blockStatements
  	:	blockStatement blockStatement*
  	;
  
  blockStatement
  
negative.code: 	;
  
  variableInitializerList
  	:	variableInitializer 
  	|	variableInitializerList ',' variableInitializer
  	;
  
  /*
  