code: public static VariableCreator creator(final String pathServiceSid, 
                                            final String pathEnvironmentSid, 
                                            final String key, 
                                            final String value) {
          return new VariableCreator(pathServiceSid, pathEnvironmentSid, key, value);
      }
docs: Create a VariableCreator to execute create.
  
  @param pathServiceSid The service_sid
  @param pathEnvironmentSid The environment_sid
  @param key The key
  @param value The value
  @return VariableCreator capable of executing the create