WeBWorK::ContentGenerator::InstructorRPCHandler is a front end for instructor calls to the rpc WebworkWebservice
Receives requests containing WebworkWebservice remote procedure call commands, executes them, and returns the resutls.
Note that the WebworkWebservice renderProblem command is not supported by this endpoint. The render_rpc endpoint defined in the WeBWorK::ContentGenerator::RenderViaRPC module handles that command.
Note that there will always be a valid JSON response to this endpoint. If an error occurs, then the response will contain an "error" key.