Determines the direction and location of the Menu in relation to it’s Toggle.
Align the menu to the right side of the Dropdown toggle
Whether or not the Dropdown is visible.
Allow Dropdown to flip in case of an overlapping on the reference element. For more information refer to
Popper.js’s flip docs.
A callback fired when the Dropdown wishes to change visibility. Called with the requested
show value, the DOM event, and the source that fired it: 'click','keydown','rootClose', or 'select'.