{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
    // MIR body to perform further instantiations (see `InstanceKind::has_polymorphic_mir_body`).
    // to instantiate into the signature of the shim. It is not necessary for users of this
    let (sig_args, untuple_args) = if let ty::InstanceKind::FnPtrShim(_, ty) = instance {