{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"AstFragmentKind::MethodReceiverExpr"}]}
        AstFragmentKind::MethodReceiverExpr => AstFragment::MethodReceiverExpr(this.parse_expr()?),
        AstFragmentKind::Expr => AstFragment::Expr(this.parse_expr()?),
        AstFragmentKind::OptExpr => {