code: public OperationStatus deleteHierarchicalEntityChild(UUID appId, String versionId, UUID hEntityId, UUID hChildId) {
          return deleteHierarchicalEntityChildWithServiceResponseAsync(appId, versionId, hEntityId, hChildId).toBlocking().single().body();
      }
docs: Deletes a hierarchical entity extractor child from the application.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param hEntityId The hierarchical entity extractor ID.
  @param hChildId The hierarchical entity extractor child ID.
  @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 OperationStatus object if successful.