@Override
    public Integer getValue(AddressTable rowObject, Settings settings, Program pgm, 
	        ServiceProvider serviceProvider) throws IllegalArgumentException {
		return Integer.valueOf(rowObject.getNumberAddressEntries());
	}
This table field displays size of the address table associated with a row in the table.
Ghidra/Features/Base/src/main/java/ghidra/util/table/field/AddressTableLengthTableColumn.java