How to install the PHP package amazon-mws-unofficial/marketplace-web-service-orders from Packagist with Composer

By Where is my PHP package

PHP
Composer
Packagist
amazon-mws-unofficial/marketplace-web-service-orders

Run the following command to install the package and its dependencies. The require command adds new packages to the composer.json file from the current directory.

composer require amazon-mws-unofficial/marketplace-web-service-orders