How can the input of a MUI desktop datepicker be updated with userEvent.type()?

[remy90]

What element should be targeted to use userEvent.type(..) on MUI's datepicker input? It has a higher order component which applies masking to the date format specified in the input but I've not been able to follow their source. It looks like their internal tests reference a textbox I've been unable to find in my rendered dom: https://github.com/mui/material-ui/blob/master/packages/mui-lab/src/DesktopDatePicker/DesktopDatePickerKeyboard.test.tsx#L35