syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"v0::mangle(tcx,"}]}
source_snippet:                     v0::mangle(tcx, instance, instantiating_crate, false)
context_before:                 hashed::mangle(tcx, instance, instantiating_crate, || {
context_after:                 })