quantumclient.common.serializer.XMLDeserializer tries to access non existing attributes of xml node

[Tatyanka]

During develop of unit test for serializer I was faced with next situation:
find_first_child_named method of serializer.XMLDeserializer tries to access "parentNodes" attribute of "node" object which is supposed to be of type xml.etree.ElementTree.Element which in turn doesn't have such attribute. (https://github.com/openstack/python-quantumclient/blob/master/quantumclient/common/serializer.py#L324)

Here is the trace, obtained by calling find_first_child_named method:
Error
_StringException: Traceback (most recent call last):
  File "/home/repos/python-quantumclient/quantumclient/tests/unit/test_serializer.py", line 373, in test_find_first_child_named
    actual = deserializer.find_first_child_named(document, 'child1')
  File "/home/repos/python-quantumclient/quantumclient/common/serializer.py", line 326, in find_first_child_named
    for node in parent.childNodes:
AttributeError: 'Element' object has no attribute 'childNodes'

The same situation for methods:
serializer.XMLDeserializer.extract_text
serializer.XMLDeserializer.find_children_named
also this methods are unused and should therefore be removed. (But need someone to approve this)

[yong sheng gong (gongysh)]

You can remove these methods on quantum server side too. the serializer codes are copied from server side. please fix server side first and then client side.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/23073

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/23073
Committed: http://github.com/openstack/python-quantumclient/commit/406f1adf45be4e6cc74b9e524c53c8227d34fcd9
Submitter: Jenkins
Branch: master

commit 406f1adf45be4e6cc74b9e524c53c8227d34fcd9
Author: Tatyana Leontovich <email address hidden>
Date: Wed Feb 27 11:28:03 2013 +0200

    quantumclient.common.serializer module cleanup

    Remove unused methods in quantumclient.common.serializer.XMLDeserializer
    that tries to access non existing attributes of xml node:
    * find_first_child_named
    * extract_text
    * find_children_named

    Change-Id: I0aff5933fa75e50748e9d0325d898c2f6836fa58
    Fixes: bug #1132850