Method append_based_on_parent_node

css-inline/src/html/parser.rs:252–263

(
        &self,
        element: &NodeId,
        prev_element: &NodeId,
        child: NodeOrText<NodeId>,
    )

    }

    fn append_based_on_parent_node(
        &self,
        element: &NodeId,
        prev_element: &NodeId,
        child: NodeOrText<NodeId>,
    ) {
        if self.document.borrow()[*element].parent.is_some() {
            self.append_before_sibling(element, child);
        } else {
            self.append(prev_element, child);
        }
    }

    /// Append a `DOCTYPE` element to the `Document` node.
    fn append_doctype_to_document(