how nim can generate "&" symbol, like there void keyDown(StringHash eventType, VariantMap& eventData); i tried this code: proc keyDown(eventType:stringHash,eventData:ptr variantMap){.codegenDecl:"$# MyApp::$#$#",exportc.} or this proc keyDown(eventType:stringHash,eventData:ref variantMap){.codegenDecl:"$# MyApp::$#$#",exportc.} but it generates "*", not "&" what code should i write to nim to generates "&"?