syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:             match self.tcx().extern_crate(cnum) {
context_before:             //    the crate name.
context_after:                 Some(&ExternCrate { src, dependency_of, span, .. }) => match (src, dependency_of) {