syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"{$($variant:tt($substruct_enum:tt))*},"}]}
source_snippet:         {$($variant:tt($substruct_enum:tt))*},
context_before:         @parse
context_after:         ($user_value:ident){$($pout:tt)*};