syntax_data: {"ast_node_type":"other","tokens":[{"end":9,"kind":"keyword","start":0,"text":"{"}]}
source_snippet:         {
context_before:                 items.iter().find(|item| item.owner_id.to_def_id() == impl_item_id)
context_after:             Some(tcx.hir_impl_item(*impl_item).expect_type().span)