public function init() {

		// Load the settings.
		$this->init_form_fields();
		$this->init_settings();

		// Define user set variables.
		$this->enabled      = $this->get_option( 'enabled' );
		$this->title        = $this->get_option( 'title' );
		$this->min_amount   = $this->get_option( 'min_amount', 0 );
		$this->availability = $this->get_option( 'availability' );
		$this->countries    = $this->get_option( 'countries' );
		$this->requires     = $this->get_option( 'requires' );

		// Actions.
		add_action( 'woocommerce_update_options_shipping_' . $this->id, array( $this, 'process_admin_options' ) );
	}