docs: def from_JSON(oauth_json, type = "service"):
          '''At the time of writing, keys include:
              client_secret, client_email, redirect_uris (list), client_x509_cert_url, client_id, javascript_origins (list)
              auth_provider_x509_cert_url, auth_uri, token_uri.'''
          assert(type == "service" or type == "web")
          return NestedBunch(json.loads(oauth_json)[type])