syntax_data: {"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// for example during method lookup. If this function returns `Some(x)` it can only unify with
context_before: /// The idea is to get something simple that we can use to quickly decide if two types could unify,
context_after: /// types for which this method returns either `Some(x)` as well or `None`.