def get_group_names(h5file, h5path='<STR_LIT:/>'):
return _get_node_names(h5file, h5path, node_type=h5py.Group)<EOL>
Return the groups names within h5file/h5path

    Parameters
    ----------
    h5file: h5py.File or path to hdf5 file
        HDF5 file object

    h5path: str
        HDF5 group path to get the group names from

    Returns
    -------
    groupnames: list of str
        List of group names