make the start document to compose_resource optional
Motivation and Context
This is to enable using these factories in ophyd objects that do not have
access to the start document. We rely on the RunEngine to inject the correct
start uid on the way out.
Description
make the start document to compose_resource optional
Motivation and Context
This is to enable using these factories in ophyd objects that do not have access to the start document. We rely on the RunEngine to inject the correct start uid on the way out.
How Has This Been Tested?
test added