TripCoverage : The trip coverage defines which part of the trip is covered by the offer, offer part, booking or booking part, respectively. If neither coveredLegIds nor coveredSections are defined, the complete trip is covered. coveredLegIds and coveredSections are mutually exclusive, i.e. only one of the structures can be present. If either coveredLegIds or coveredSections is defined, the sectionIndex field must be filled to indicate which part of the trip is covered by the respective OfferPart or BookingPart