public function addon_template() {
			?>
            <div class="mortgage-calculator-addon">
                <h3><?php echo esc_html__( 'Google Spreadsheets add-on', 'CalculatorsGoogleSpreadSheetsAddon' ); ?></h3>
                <p><?php echo esc_html__( 'Description', 'CalculatorsGoogleSpreadSheetsAddon' ); ?></p>
                <a href="#"
                   class="addon"><?php echo esc_html__( 'install add-on', 'CalculatorsGoogleSpreadSheetsAddon' ); ?></a>
            </div>
			<?php
		}