syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // type is known at the time of the creation of `ClosureArgs`,
context_before:     // FIXME(eddyb) this should be unnecessary, as the shallowly resolved
context_after:     // see `rustc_hir_analysis::check::closure`.