ID of the Pattern that a new instance will be created.
Configurations for the Pattern in JSON format.
Set which calendar type should be created (SingleDate, RangeDate).
Set which provider should be used to create the calendar instance.
(OSFramework.OSUI.Patterns.DatePicker.IDatePicker) - Instance created of the new DatePicker
Create the new DatePickerItem instance and add it to the datePickerItemsMap