in gridengine/src/gridengine/util.py [0:0]
def _add_default_mapping(tok: str) -> None:
sub_toks = split_ge_list(tok)
# the type checker does not like default_hostgroups, since it is looking at the type
# of the argument
for hg in default_hostgroups: # type: ignore
if hg not in mapping:
mapping[hg] = []
mapping[hg].extend(sub_toks)