Add Customer Order Note to exported pdf

Hello there and thank you for this great plugin!!!

I wonder if there is a way to display Customer Order Note to the exported pdf.
At the moment, as i see in the cart-table.pdf, there are
get_billing_first_name(),
get_billing_last_name(),
get_billing_email(),
get_billing_phone().

Is there a way to add get_customer_note()?

Thank you!