Details of our UML Profile to model OData Web APIs. Once you have your UML model annotated with OData stereotypes you could automate the generation of your OData definition files.
Since the OMG added
BPMN to its catalog of Business Modeling and Management Specifications
I was wondering how OMG would deal with the clear overlapping between BPMN and UML activity diagrams (there are some differences in their semantics but roughly speaking both can be used to model the same).