syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// and we desugared it so that the type of the expression is
context_before:     /// Here is an example. Imagine we have a closure expression
context_after:     /// `Closure`, and `Closure` expects `i32` as argument. Then it