code: public ServiceFuture<Person> getAsync(String personGroupId, UUID personId, final ServiceCallback<Person> serviceCallback) {
          return ServiceFuture.fromResponse(getWithServiceResponseAsync(personGroupId, personId), serviceCallback);
      }
docs: Retrieve a person's information, including registered persisted faces, name and userData.
  
  @param personGroupId Id referencing a particular person group.
  @param personId Id referencing a particular person.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object