def getChild(node, childName):
    if node:
        return _wrap_node(xpath.selectSingleNode(node._impl, childName))
    else:
        return None
def getChild(node, childName):
    return _wrap_node(XPathAPI.selectSingleNode(node._impl, childName))
def getChild(node, childName):
    return _wrap_node(XPathAPI.selectSingleNode(node._impl, childName))