Documentation needed for endpoint api/pid/find #185

Issue

Given a handle, I wanted to query the REST API to access the matching DSpace Object.
I searched through the REST contract, but could not find any mention of a REST endpoint to resolve a handle.

After consulting with my colleagues and digging through the Angular code, we found the following endpoint: https://api7.dspace.org/server/#/server/api/pid/find?id=hdl:10673/403

This endpoint does not seem to be documented. Can this be added?

Background info

The /api/pid/find endpoint routes to IdentifierRestController, which calls the IdentifierService, which supports multiple IdentifierProviders. Supported identifier providers include: DOIIdentifierProvider, EZIDIdentifierProvider, HandleIdentifierProvider, etc.