code: public Person create(String personGroupId, CreatePersonGroupPersonsOptionalParameter createOptionalParameter) {
          return createWithServiceResponseAsync(personGroupId, createOptionalParameter).toBlocking().single().body();
      }
docs: Create a new person in a specified person group.
  
  @param personGroupId Id referencing a particular person group.
  @param createOptionalParameter the object representing the optional parameters to be set before calling this API
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws APIErrorException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the Person object if successful.