code: public Observable<OperationStatus> updateExplicitListItemAsync(UUID appId, String versionId, UUID entityId, long itemId, UpdateExplicitListItemOptionalParameter updateExplicitListItemOptionalParameter) {
          return updateExplicitListItemWithServiceResponseAsync(appId, versionId, entityId, itemId, updateExplicitListItemOptionalParameter).map(new Func1<ServiceResponse<OperationStatus>, OperationStatus>() {
              @Override
              public OperationStatus call(ServiceResponse<OperationStatus> response) {
                  return response.body();
              }
          });
      }
docs: Updates an explicit list item for a Pattern.Any entity.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param entityId The Pattern.Any entity extractor ID.
  @param itemId The explicit list item ID.
  @param updateExplicitListItemOptionalParameter the object representing the optional parameters to be set before calling this API
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the OperationStatus object