Description of problem:

When you call TaskService.getTasksAssignedAsPotentialOwner(String userId, List<String> groupIds, String language, int firstResult, int maxResults) via REST API, it throws java.lang.UnsupportedOperationException.

It is because org.kie.services.client.api.command.AcceptedCommands doesn't list GetTaskAssignedAsPotentialOwnerPagingCommand().

Steps to Reproduce:
1. Create ksession/taskService from RemoteRestRuntimeFactory.
2. Call TaskService.getTasksAssignedAsPotentialOwner(String userId, List<String> groupIds, String language, int firstResult, int maxResults)

—
RemoteRestRuntimeFactory restSessionFactory = new RemoteRestRuntimeFactory(deploymentId, appUrl, user, password);
RemoteRuntimeEngine engine = restSessionFactory.newRuntimeEngine();

KieSession ksession = engine.getKieSession();
TaskService taskService = engine.getTaskService();

ProcessInstance processInstance = ksession.startProcess("project1.helloProcess", null);
List<String> groupIds = new ArrayList<String>();
groupIds.add("IT");

List<TaskSummary> tasksAssignedAsPotentialOwner = taskService.getTasksAssignedAsPotentialOwner("john",
groupIds, "en-UK", 1, 10);
—

Actual results:

—
Exception in thread "main" java.lang.UnsupportedOperationException: The .getTasksAssignedAsPotentialOwner(..) method is not supported on the remote api.
at org.kie.services.client.api.command.AbstractRemoteCommandObject.execute(AbstractRemoteCommandObject.java:95)
at org.jbpm.services.task.impl.command.CommandBasedTaskService.getTasksAssignedAsPotentialOwner(CommandBasedTaskService.java:416)
at com.sample.SimpleRestClientFail.main(SimpleRestClientFail.java:44)
—

Expected results:

Returns taskSummary list.