Specifies the block models that is being dragged.
boolean
Specifies whether the drag action should be canceled.
number
Specifies the index where the block is intended to be dropped.
Event
Specifies the native event (e.g., mouse or drag event) that triggered the block drag action.
number[]
Specifies the index of the blocks from which the drag started.
HTMLElement
Specifies the target HTML element where the block is being dragged from.