syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// where `N` is the bound variable's anonymous index into the binder, and
context_before:     /// It is conventional to render anonymous bound types like `^N` or `^D_N`,
context_after:     /// `D` is the debruijn index, or totally omitted if the debruijn index is zero.