syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// universe 0 always corresponds to some "ground" type that the user
context_before:     /// use universes to talk about this. In other words, a type name in
context_after:     /// declared, but a type name in a non-zero universe is a placeholder