org.alfresco.service.cmr.workflow
Interfaces 
WorkflowAdminService
WorkflowService
Classes 
WorkflowDefinition
WorkflowDeployment
WorkflowInstance
WorkflowNode
WorkflowPath
WorkflowTask
WorkflowTaskDefinition
WorkflowTaskQuery
WorkflowTaskQuery.OrderBy
WorkflowTaskState
WorkflowTimer
WorkflowTransition
Exceptions 
WorkflowException