def METHOD_NAME(self, vo):
    """ PERMISSION(CORE): Check permission to add a did"""
    scope = scope_name_generator()
    add_scope(scope=InternalScope(scope, vo=vo), account=InternalAccount('root', vo=vo))
    assert has_permission(issuer='panda', action='add_did', kwargs={'scope': scope}, vo=vo)
    assert not has_permission(issuer='spock', action='add_did', kwargs={'scope': scope}, vo=vo)