code: public KerasModelBuilder weightsHdf5FilenameNoRoot(String weightsHdf5Filename) throws IOException {
          checkForExistence(weightsHdf5Filename);
          this.weightsArchive = new Hdf5Archive(weightsHdf5Filename);
          return this;
      }
docs: Set weights of the model by providing the file name of the corresponding weights HDF5 file.
  The root of the HDF5 group containing weights won't be set by this method.
  
  @param weightsHdf5Filename File name of weights HDF5
  @return Model builder