scriptExpr = (IScriptExpression)expr;
exprText = ((IScriptExpression)expr).getText( );
	private void populateExprMap( )	{		assert expressions != null;		if( exprMap == null )		{			exprMap = new HashMap( );		}				Iterator iter = expressions.iterator();		while( iter.hasNext() )		{			IBaseExpression expr = (IBaseExpression)iter.next();			IScriptExpression scriptExpr = null;			if ( expr instanceof IConditionalExpression )			{				IConditionalExpression condExpr = ( IConditionalExpression )expr;				scriptExpr = condExpr.getExpression( );			}			else			{				scriptExpr = (IScriptExpression)expr;			}			exprMap.put( scriptExpr.getText(), scriptExpr );		}	}