pub fn pdfxform<ET: EngineTypes>(
engine: &mut EngineReferences<'_, ET>,
tk: ET::Token,
) -> TeXResult<Option<Box<WhatsitFunction<ET>>>, ET>where
ET::Extension: PDFExtension<ET>,pub fn pdfxform<ET: EngineTypes>(
engine: &mut EngineReferences<'_, ET>,
tk: ET::Token,
) -> TeXResult<Option<Box<WhatsitFunction<ET>>>, ET>where
ET::Extension: PDFExtension<ET>,