An object for tracking a placeholder cell that you added to your table during a drop operation.
Mac Catalyst 13.0+Beta
Do not create instances of this class yourself. Instead, call dropItem:toPlaceholder: from your drop coordinator object. That method inserts a placeholder cell into the table and returns a UITableViewDropPlaceholderContext object for managing that placeholder.
An object that contains information about a placeholder cell being inserted into a table.
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