syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// while the `tupled_upvars_ty`, representing the by-move version of the same
context_before:     /// from the closure's upvars, this will be `for<'env> fn() -> (&'env String,)`,
context_after:     /// captures, will be `(String,)`.