// Gets associations between a campaign and a shared entity such as a negative keyword list.
        // You can request associations by associated entity identifiers.

        private async Task <GetSharedEntityAssociationsByEntityIdsResponse> GetSharedEntityAssociationsByEntityIdsAsync(
            IList <long> entityIds,
            string entityType,
            string sharedEntityType)
        {
            var request = new GetSharedEntityAssociationsByEntityIdsRequest
            {
                EntityIds        = entityIds,
                EntityType       = entityType,
                SharedEntityType = sharedEntityType
            };

            return(await Service.CallAsync((s, r) => s.GetSharedEntityAssociationsByEntityIdsAsync(r), request));
        }
        // Gets associations between a campaign and a shared entity such as a negative keyword list. 
        // You can request associations by associated entity identifiers.

        private async Task<GetSharedEntityAssociationsByEntityIdsResponse> GetSharedEntityAssociationsByEntityIdsAsync(
            IList<long> entityIds,
            string entityType,
            string sharedEntityType)
        {
            var request = new GetSharedEntityAssociationsByEntityIdsRequest
            {
                EntityIds = entityIds,
                EntityType = entityType,
                SharedEntityType = sharedEntityType
            };

            return (await Service.CallAsync((s, r) => s.GetSharedEntityAssociationsByEntityIdsAsync(r), request));
        }