Parse an xml.dom Node object representing a target execution context
        into this object.

def parse_xml_node(self, node):
        '''Parse an xml.dom Node object representing a target execution context
        into this object.

        '''
        super(TargetExecutionContext, self).parse_xml_node(node)
        if node.hasAttributeNS(RTS_NS, 'id'):
            self.id = node.getAttributeNS(RTS_NS, 'id')
        else:
            self.id = ''
        return self