code: public int addExplicitListItem(UUID appId, String versionId, UUID entityId, AddExplicitListItemOptionalParameter addExplicitListItemOptionalParameter) {
          return addExplicitListItemWithServiceResponseAsync(appId, versionId, entityId, addExplicitListItemOptionalParameter).toBlocking().single().body();
      }
docs: Add a new item to the explicit list for the Pattern.Any entity.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param entityId The Pattern.Any entity extractor ID.
  @param addExplicitListItemOptionalParameter the object representing the optional parameters to be set before calling this API
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws ErrorResponseException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the int object if successful.