syntax_data: {"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":".get_or_insert_with(||"}]}
source_snippet:                     .get_or_insert_with(|| this.new_source_scope(scope_span, LintLevel::Inherited));
context_before:                 let vis_scope = *visibility_scope
context_after:                 let source_info = SourceInfo { span, scope: this.source_scope };