How do I get the sheetImports attribute for the reader class?

[sean20190104]

sheetImports attribute why not is public?I have some custom attributes in the sheetImport class that I can't get right now
public static function afterImport(AfterImport $afterImport){
dd(unserialize(serialize($afterImport->getReader()->sheetImports)));
}

[patrickbrouwers]

Because you have to get it via $afterImport->getConcernable()

[sean20190104]

However, the custom attributes of the StandardSheetImport class cannot be obtained;
The following code:
public function sheets(): array
{
return [
0 => new StandardSheetImport(),
1 => new StandardAttributeSheetImport()
];
}

[sean20190104]

I uploaded two sheets, $afterImport->getConcernable() can't get the sheet object in them

[sean20190104]

I tried importing phpsReadsheet directly, which should avoid my problems