/// <summary>Snippet for UpdateIndex</summary>
public void UpdateIndex()
{
// Snippet: UpdateIndex(Index, FieldMask, CallSettings)
// Create client
IndexServiceClient indexServiceClient = IndexServiceClient.Create();
// Initialize request argument(s)
gcav::Index index = new gcav::Index();
FieldMask updateMask = new FieldMask();
// Make the request
Operation <gcav::Index, UpdateIndexOperationMetadata> response = indexServiceClient.UpdateIndex(index, updateMask);
// Poll until the returned long-running operation is complete
Operation <gcav::Index, UpdateIndexOperationMetadata> completedResponse = response.PollUntilCompleted();
// Retrieve the operation result
gcav::Index result = completedResponse.Result;
// Or get the name of the operation
string operationName = response.Name;
// This name can be stored, then the long-running operation retrieved later by name
Operation <gcav::Index, UpdateIndexOperationMetadata> retrievedResponse = indexServiceClient.PollOnceUpdateIndex(operationName);
// Check if the retrieved long-running operation has completed
if (retrievedResponse.IsCompleted)
{
// If it has completed, then access the result
gcav::Index retrievedResult = retrievedResponse.Result;
}
// End snippet
}