syntax_data: {"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"unsafe"}]}
source_snippet:         unsafe { std::mem::transmute::<ty::PolyFnSig<'tcx>, ty::Binder<'_, ty::FnSig<'_>>>(fn_sig) }
context_before:         // FIXME: Represent the above fact in the trait system somehow.
context_after:     }