title: Workflow Persistence for multiple workflows
body: <p>This seems like an elementary question, but I can't find the answer anywhere:</p>
  
  <p>I have several different types of long-running state machine workflows that I am working with across multiple host applications with a central database.  I am using the SqlWorkflowPersistenceService to persist them. So say I have three workflow types WorkflowOne, WorkflowTwo, and WorkflowThree.  An instance of each of those is started and persisted to the database by one user.  Another user comes along and wants to make various changes, so they fire up the application.  Now I can use the persistence service to give me a list of all the persisted instances but how do I know which is of type WorkflowOne and which is WorkflowTwo or WorkflowThree?</p>