syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// within which both pointer types appear is
context_before:     /// contravariant with respect to its parameters, so the variance
context_after:     /// `Covariant.xform(Contravariant)`, or `Contravariant`. `*const