An array of objects with the following properties:
adapter - [type: dundas.view.controls.Adapter] - The adapter for this drop zone.
bindings - [type: Array] - Plain object containing info for each drop zone rect
targetId [type: String] - A unique identifier for this binding.
targetName [type: String] - The displayed text for this binding.
bindingType [type: dundas.data.PlacementPosition, optional: true] - (optional) The placement that should be assigned to an analysis element dropped onto this binding. If not specified, it is assigned to rows.
iconUrl [type: String, optional: true] - (optional) A URL pointing to the icon image to be shown next to the header.
tooltipText [type: String, optional: true] - (optional) Any tooltip text that should be shown for this binding header.
rect [type: dundas.Rect, optional: true] - (optional) The rectangle co-ordinates for the adorner to display for drop-zones on this adapter.