syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"tcx.impls_are_allowed_to_overlap(impl_def_id,"}]}
source_snippet:                     tcx.impls_are_allowed_to_overlap(impl_def_id, possible_sibling)
context_before:                 if let Some(overlap_kind) =
context_after:                 {