code: func (r *MintOAuthTokenGrantRPC) logRequest(c context.Context, req *minter.MintOAuthTokenGrantRequest, caller identity.Identity) {
  	if !logging.IsLogging(c, logging.Debug) {
  		return
  	}
  	m := jsonpb.Marshaler{Indent: "  "}
  	dump, _ := m.MarshalToString(req)
  	logging.Debugf(c, "Identity: %s", caller)
  	logging.Debugf(c, "MintOAuthTokenGrantRequest:\n%s", dump)
  }
docs: // logRequest logs the body of the request.