String connectorId = ((JSONString) rpcCall.get(0)).stringValue();
String interfaceName = ((JSONString) rpcCall.get(1)).stringValue();
String methodName = ((JSONString) rpcCall.get(2)).stringValue();
JSONArray parametersJson = (JSONArray) rpcCall.get(3);
ServerConnector connector = connectorMap.getConnector(connectorId);
MethodInvocation invocation = new MethodInvocation(connectorId,
interfaceName, methodName);
if (connector instanceof HasJavaScriptConnectorHelper) {
((HasJavaScriptConnectorHelper) connector)