Assists in locating the WorkflowUtility and WorkflowDocumentActions services from a Workflow client.
It's behavior is to check the workflow client configuration (workfow-config.properties) and if it
finds a webservice url configured it connects to the services via web services.
A PostProcessor listens for events from the Workflow routing engine for it's DocumentType.
It gives clients hooks into the routing process to perform operations at the various stages.
Implementations of this Interface are potentially remotable, so this Interface uses
value objects.