Get a list of invoices

Lists the invoices of an organization whose billing period overlaps the requested date range. The date range is always bounded, so leaving out starting_date and ending_date does not list every invoice of the organization. With neither given, the range defaults to the previous full calendar month: from the first day of the previous month to the first day of the current month, both inclusive. With only starting_date given, the range covers the one month starting from that date. With only ending_date given, it covers the one month ending at that date. With both given, the range is the period between them, and ending_date must be after starting_date or the request fails with bad_request.