DialogFragment with toolbar and a menu in it

DialogFragment+withToolbar.kt

class MyDialogFragment : DialogFragment() {
    ...
    private fun setupToolbar() {
        setupToolbarCloseButton(toolbar, R.string.my_dialog_title)
        setupToolbarMenu()
    }

    private fun setupToolbarMenu() {
        toolbar.inflateMenu(R.menu.menu_my_dialog)
        toolbar.setOnMenuItemClickListener { menuItem ->
            if (menuItem.itemId == R.id.share) {
                Toast.makeText(requireContext(), "Not implemented", Toast.LENGTH_LONG).show()
            }
            true
        }
    }
    ...
}

DialogFragmentExtensions.kt

fun DialogFragment.setupToolbarCloseButton(toolbar: Toolbar, @StringRes titleRes: Int?) {
    titleRes?.let(toolbar::setTitle)
    toolbar.navigationIcon = ContextCompat.getDrawable(requireContext(), R.drawable.ic_close)
    toolbar.setNavigationOnClickListener {
        dismiss()
    }
}

menu_my_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <item
        android:id="@+id/share"
        android:icon="@drawable/ic_share"
        android:title="@string/share"
        app:showAsAction="ifRoom" />

</menu>