Share intent to used recent or often-used contacts

Some of my Android apps allows me to share to oft-used (or recent?) contacts, which is quite convenient. **What is this feature called?** I'm having a hard time finding information about this "direct share" feature on the API developer docs . *(The reason I want to know what it's called is so I can make a feature request to my receipt scanner app people, so I don't have to type receipts@myaccountants each and every time)*