@Override
protected String getUnassignedRuleCallToken(
EObject semanticObject, RuleCall ruleCall, INode node) {
if (ruleCall.getRule() == grammarAccess.getArrayBracketsRule())
return getArrayBracketsToken(semanticObject, ruleCall, node);
else if (ruleCall.getRule() == grammarAccess.getOpSingleAssignRule())
return getOpSingleAssignToken(semanticObject, ruleCall, node);
return "";
}