def METHOD_NAME(options, prop):
	"""Return True if this property (eg "userquota@") should be skipped."""
	(field, isgroup) = props[prop]
	if field not in options.fields:
		return True
	if isgroup and "posixgroup" not in options.types and \
	    "smbgroup" not in options.types:
		return True
	if not isgroup and "posixuser" not in options.types and \
	    "smbuser" not in options.types:
		return True
	return False