def METHOD_NAME(self):
    urls = [
        "https://raw.githubusercontent.com/openforcefield/openff-toolkit/master/openff/toolkit/data/test_forcefields/test_forcefield.offxml",
        "https://raw.githubusercontent.com/openforcefield/openff-toolkit/master/openff/toolkit/data/test_forcefields/tip3p.offxml",
    ]
    # A generator should work as well
    ForceField(iter(urls))