syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"(ty::GenericArgKind::Type(obl),"}]}
source_snippet:                 (ty::GenericArgKind::Type(obl), ty::GenericArgKind::Type(imp)) => {
context_before:                 (ty::GenericArgKind::Lifetime(_), ty::GenericArgKind::Lifetime(_)) => true,
context_after:                     self.types_may_unify_inner(obl, imp, depth)