cli: Make child lookup not specific to guest devices

<seclabel> is not singleton nowadays, so we need to extend our
infrastructure to handle non-device child properties. This is part of
that

1 files changed, 10 insertions, 0 deletions

diff --git a/virtinst/xmlbuilder.py b/virtinst/xmlbuilder.py
index 84bbc24c..3b6e3dd6 100644
--- a/virtinst/xmlbuilder.py
+++ b/virtinst/xmlbuilder.py
@@ -984,6 +984,16 @@ class XMLBuilder(object):
         _remove_xpath_node(self._xmlstate.xml_ctx, xpath, dofree=False)
         self._set_child_xpaths()
 
+    def list_children_for_class(self, klass):
+        """
+        Return a list of all XML child objects with the passed class
+        """
+        ret = []
+        for prop in self._all_child_props().values():
+            ret += [obj for obj in util.listify(prop._get(self))
+                    if obj.__class__ == klass]
+        return ret
+
 
     #################################
     # Private XML building routines #