Grabbed dndbeyond's source code

```
~/go/bin/sourcemapper -output ddb -jsurl https://media.dndbeyond.com/character-app/static/js/main.90aa78c5.js
```

ddb_main/node_modules/@mui/material/MenuItem/menuItemClasses.js

@@ -0,0 +1,7 @@
+import generateUtilityClasses from '@mui/utils/generateUtilityClasses';
+import generateUtilityClass from '@mui/utils/generateUtilityClass';
+export function getMenuItemUtilityClass(slot) {
+  return generateUtilityClass('MuiMenuItem', slot);
+}
+const menuItemClasses = generateUtilityClasses('MuiMenuItem', ['root', 'focusVisible', 'dense', 'disabled', 'divider', 'gutters', 'selected']);
+export default menuItemClasses;