syntax_data: {"ast_node_type":"function","tokens":[{"end":49,"kind":"keyword","start":0,"text":"pub(crate)"}]}
source_snippet:     pub(crate) fn or(self, other: Self) -> Self {
context_before:     /// Produces a new `Tree` accepting either `self` or `other` as alternative layouts.
context_after:         match (self, other) {