syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// match arm we have `Foo { x: _, ... }`... in that case, the test for
context_before:     /// For example, suppose we are testing whether `foo.x == 22`, but in one
context_after:     /// the value of `x` has no particular relevance to this candidate. In