def METHOD_NAME():
    # There was a nasty bug where the hashing function was changing its result
    # every call
    obj = ChemicalConstantsPackage.correlations_from_IDs(['hexane'])
    hashes_orig = [hash_any_primitive(getattr(obj, k)) for k in obj.correlations]
    copy = obj.as_json()
    hashes_after = [hash_any_primitive(getattr(obj, k)) for k in obj.correlations]
    assert hashes_orig == hashes_after