In Java code, how can you set a minimum date for a DatePicker to restrict date selection?

a$.$

datePicker.setMinDate$($System$.$currentTimeMillis$())$;

b$.$

datePicker.setMinimumDate$($System$.$currentTimeMillis$())$;

c$.$

datePicker.setStartDate$($System$.$currentTimeMillis$())$;

d$.$

datePicker.setMinValue$($System$.$currentTimeMillis$())$;