TlvKeySetReadResponse: ObjectSchema<{
    groupKeySet: FieldType<TypeFromFields<{
        epochKey0: FieldType<null | Uint8Array>;
        epochKey1: FieldType<null | Uint8Array>;
        epochKey2: FieldType<null | Uint8Array>;
        epochStartTime0: FieldType<null | number | bigint>;
        epochStartTime1: FieldType<null | number | bigint>;
        epochStartTime2: FieldType<null | number | bigint>;
        groupKeyMulticastPolicy: OptionalFieldType<GroupKeyManagement.GroupKeyMulticastPolicy>;
        groupKeySecurityPolicy: FieldType<GroupKeyManagement.GroupKeySecurityPolicy>;
        groupKeySetId: FieldType<number>;
    }>>;
}> = ...

This command shall be generated in response to the KeySetRead command, if a valid Group Key Set was found. It shall contain the configuration of the requested Group Key Set, with the EpochKey0, EpochKey1 and EpochKey2 key contents replaced by null.

MatterSpecification.v13.Core § 11.2.7.3