'Process error page specifications.
If one of the supplied error codes is 404, allow fall through to runtime.
Args:
node: An ElementTreeNode which looks something like the following.
<error-page>
<error-code>500</error-code>
<location>/errors/servererror.jsp</location>
</error-page>'

def ProcessErrorPageNode(self, node):

    error_code = xml_parser_utils.GetChildNodeText(node, 'error-code')
    if (error_code == '404'):
        self.web_xml.fall_through_to_runtime = True
