@Override
	protected Object[] createColumnHeaders() {

		if (numColumns <= 0) {
			return null;
		}

		Object[] columnNamesLocal = new Object[numColumns];

		columnNamesLocal[0] = HEADER_COL_MNEMONIC;
		for (int i = 1; i < numColumns; i++) {
			columnNamesLocal[i] = HEADER_COL_OPERAND + " " + i;
		}

		return columnNamesLocal;
	}
Creates the array of strings that will be our column headers. The first
column is always the mnemonic; all others will be operands and will use a
simple numeric indicator (ie: operand 1, operand 2, etc...).
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/instructionsearch/ui/InstructionTable.java