syntax_data: {"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"this.canonical_user_type_annotations.push(CanonicalUserTypeAnnotation"}]}
source_snippet:                     this.canonical_user_type_annotations.push(CanonicalUserTypeAnnotation {
context_before:                 let user_ty = user_ty.as_ref().map(|user_ty| {
context_after:                         span: source_info.span,