@Override
		public void closeAllData(Data data, TaskMonitor monitor) {
			models[modelID].closeAllData(data, null);
		}
Returns the next address in the specified direction

@param address the start address
@param after true to find the address after the given address; false to find the 
		  address before the given address
@return the next address in the given direction; null if there is no next address or if
        <code>address</code> is null
Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/multilisting/MultiListingLayoutModel.java