syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// "forall" binders (also called **universal quantification**). The
context_before:     /// Universes are used to do type- and trait-checking around these
context_after:     /// idea is that when, in the body of `bar`, we refer to `T` as a