syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// regions with inference variables -- the index of the variable is then used
context_before: /// representation of regions. For this reason, it internally replaces all the
context_after: /// to index into internal NLL data structures. See `rustc_const_eval::borrow_check`