code: func newJWTSigner(key, format string) goaclient.Signer {
  	return &goaclient.APIKeySigner{
  		SignQuery: false,
  		KeyName:   "Authorization",
  		KeyValue:  key,
  		Format:    format,
  	}
  
  }
docs: // newJWTSigner returns the request signer used for authenticating
  // against the jwt security scheme.