syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: ///        ancestor of `foo.x.y`. It's the caller's responsibility to ensure that both projections
context_before: ///     2. Since we only look at the projections here function will return `bar.x` as a valid
context_after: ///        list are being applied to the same root variable.