Currently following methods are supported.
To create an instance of the specified process
XpdlExecution instanciateProcess(final String processName)
To obtain all user activities from specific instance
Collection<String> getToDoList(final String instanceName)
To start an activity (when activity state is Ready). its state becomes Executing.
void startActivity(final String instanceName, final String nodeName)
To terminate an activity (when activity is executing). Its state becomes Terminated
void terminateActivity(String instanceName, String nodeName)