def lookupByClass(self, classNames, parentDn=None, propFilter=None):
"""Lookup MO's by class
A short-form managed object (MO) query by class.
Args:
classNames (str or list): The class name list of class names.
If parentDn is set, the classNames are used as a filter in a
subtree query for the parentDn
parentDn (cobra.mit.naming.Dn or str): The distinguished
name of the parent object as a :class:`cobra.mit.naming.Dn` or
string.
propFilter (str): A property filter expression
Returns:
list: A list of the managed objects found in the query.
"""
if parentDn:
dnQuery = DnQuery(parentDn)
dnQuery.classFilter = classNames
dnQuery.queryTarget = 'subtree'
if propFilter:
dnQuery.propFilter = propFilter
mos = self.query(dnQuery)
else:
classQuery = ClassQuery(classNames)
if propFilter:
classQuery.propFilter = propFilter
mos = self.query(classQuery)
return mos
