def METHOD_NAME():
    """
    Force NetCDF loading with realised arrays.
    Since passing between data generation and benchmarking environments is via
    file loading, but some benchmarks are only meaningful if starting with real
    arrays.
    """
    from iris.fileformats.netcdf.loader import _get_cf_var_data as pre_patched
    def patched(cf_var, filename):
        return as_concrete_data(pre_patched(cf_var, filename))
    netcdf._get_cf_var_data = patched
    yield netcdf
    netcdf._get_cf_var_data = pre_patched