def initializeLarchPlugin(_larch=None):
    _larch.symtable.set_symbol('_xafs._feff_executable', find_executable('feff6'))
test list volumes.
dataset/ETHPy150Open xraypy/xraylarch/plugins/xafs/feffrunner.py/initializeLarchPlugin--crossover with--dataset/ETHPy150Open saltstack/salt/tests/unit/modules/dockerng_test.py/DockerngTestCase.test_list_volumes