@Override
	public void clear() {
		removeAllListeners();
		int numRows = rows.size();
		for (int i = numRows - 1; i >= 0; i--) {
			removeRow(i);
		}
		setHeader(null);
		columnCount = 1;
		rowPanel.validate();
		validate();
		invalidate();
		adjustUseForAllEnablement();
	}
Removes header text for this panel and all table/row information.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/VariousChoicesPanel.java