public function wc_order_possible_tokens( $tokens = array(), $args = array() ) {
		$args['meta'] = 'WCSHIPSTATIONSHIPPED';
		$fields       = array();
		$fields[]     = [
			'tokenId'         => 'TRACKING_NUMBER',
			'tokenName'       => esc_attr__( 'Shipping tracking number', 'uncanny-automator' ),
			'tokenType'       => 'text',
			'tokenIdentifier' => 'WCSHIPSTATIONSHIPPED',
		];
		$fields[]     = [
			'tokenId'         => 'CARRIER',
			'tokenName'       => esc_attr__( 'Shipping carrier', 'uncanny-automator' ),
			'tokenType'       => 'text',
			'tokenIdentifier' => 'WCSHIPSTATIONSHIPPED',
		];
		$fields[]     = [
			'tokenId'         => 'SHIP_DATE',
			'tokenName'       => esc_attr__( 'Ship date', 'uncanny-automator' ),
			'tokenType'       => 'text',
			'tokenIdentifier' => 'WCSHIPSTATIONSHIPPED',
		];
		$tokens       = array_merge( $tokens, $fields );

		return $this->wc_possible_tokens( $tokens, $args, 'order' );
	}