Package-level declarations

Extension function to filter a list of receipts based on a search query.

Fetches all original receipts of a return receipt. Returns an empty receipt list if the receipt does not reference a original receipts or any error occur during fetching of the original receipts.

Fetches all return receipts of an original receipt. Returns an empty receipt list if the receipt does not own a return receipts or any error occur during fetching of the return receipts.

Checks whether the receipt contains a referenced return receipt.

Checks whether the receipt contains a reference to an original receipt flagging it as return receipt.