syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"trait_ref.to_host_effect_clause(infcx.tcx,"}]}
source_snippet:                 trait_ref.to_host_effect_clause(infcx.tcx, ty::BoundConstness::Maybe),
context_before:                 param_env,
context_after:             )