Add new user to Liferay using Liferay Forms and Workflow

workflow.groovy

import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.portal.kernel.service.ServiceContext;
import com.liferay.counter.kernel.service.CounterLocalServiceUtil;
import com.liferay.portal.kernel.service.UserLocalServiceUtil;
import com.liferay.portal.kernel.service.ServiceContext;
import com.liferay.dynamic.data.lists.service.DDLRecordVersionLocalServiceUtil;
import com.liferay.dynamic.data.lists.model.DDLRecordVersion;

// static stuff
long ADMIN_ID = 20130L;

// Fetch the form record Id from the workflow context
long recVerId = GetterUtil.getLong((String)workflowContext.get(WorkflowConstants.CONTEXT_ENTRY_CLASS_PK));
System.out.println("recVerId: " + recVerId);

DDLRecordVersion ddlRecordVersion = DDLRecordVersionLocalServiceUtil.getLatestRecordVersion(recVerId);

// let's make sure it's initiated
System.out.println("*** creating user from workflow ***");

// get the companyID
long companyId = GetterUtil.getLong((String) workflowContext.get(WorkflowConstants.CONTEXT_COMPANY_ID));
System.out.println("companyID: " + companyId);

// get the servicecontext
ServiceContext serviceContext = (ServiceContext) workflowContext.get(WorkflowConstants.CONTEXT_SERVICE_CONTEXT);

long userId = CounterLocalServiceUtil.increment();
System.out.println("New userId: " + userId);