void VariableRefExpr::toString(nsAString& aDest)
RelationalExpr::toString(nsAString& str)
void VariableRefExpr::toString(nsAString& aDest){    aDest.Append(PRUnichar('$'));    if (mPrefix) {        nsAutoString prefix;        mPrefix->ToString(prefix);        aDest.Append(prefix);        aDest.Append(PRUnichar(':'));    }    nsAutoString lname;    mLocalName->ToString(lname);    aDest.Append(lname);} //-- toString