code: public String generateToken() throws OpenViduJavaClientException, OpenViduHttpException {
  		return this.generateToken(new TokenOptions.Builder().role(OpenViduRole.PUBLISHER).build());
  	}
docs: Gets a new token associated to Session object with default values for
  {@link io.openvidu.java.client.TokenOptions}. This always translates into a
  new request to OpenVidu Server
  
  @return The generated token
  
  @throws OpenViduJavaClientException
  @throws OpenViduHttpException