Proceed with all children of `node`.

def process_children(self, node, elem, module, path, omit=[]):
        """Proceed with all children of `node`."""
        for ch in node.i_children:
            if ch not in omit and (ch.i_config or self.doctype == "data"):
                self.node_handler.get(ch.keyword, self.ignore)(
                    ch, elem, module, path)