syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// fn). We need to be able to determine, for any given region, which
context_before:     /// In this type, there are two binders (the outer fn and the inner
context_after:     /// fn type it is bound by, the inner or the outer one. There are