public void signal(String executionId, String signalName, Object signalData, Map<String, Object> processVariables) {
commandExecutor.execute(new SignalCmd(executionId, signalName, signalData, processVariables));
}
public void signal(String executionId, Map<String, Object> processVariables) {
commandExecutor.execute(new SignalCmd(executionId, null, null, processVariables));
}