public String getSystemId () { if (entityStack.empty ()) return null; else return (String) entityStack.peek (); }
public String getSystemId() { if (entityStack.empty()) { return null; } else { return (String) entityStack.peek(); } }
    public String getSystemId ()    {	if (entityStack.empty ())	    return null;	else	    return (String) entityStack.peek ();    }