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  [The "BSD license"]
  Copyright (c) 2005-2009 Terence Parr
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package org.antlr.runtime;

Rules can return start/stop info as well as possible trees and templates
public class RuleReturnScope {
Return the start token or tree
	public Object getStart() { return null; }
Return the stop token or tree
	public Object getStop() { return null; }
Has a value potentially if output=AST;
	public Object getTree() { return null; }
Has a value potentially if output=template; Don't use StringTemplate type as it then causes a dependency with ST lib.
	public Object getTemplate() { return null; }
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