syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"(vec![build_variant_info(Some(variant_def.name),"}]}
source_snippet:             (vec![build_variant_info(Some(variant_def.name), &fields, layout)], None)
context_before:             let fields: Vec<_> = variant_def.fields.iter().map(|f| f.name).collect();
context_after:         }