/// <summary>Snippet for ImportEntities</summary>
        public void ImportEntities()
        {
            // Snippet: ImportEntities(string, IDictionary<string,string>, string, EntityFilter, CallSettings)
            // Create client
            DatastoreAdminClient datastoreAdminClient = DatastoreAdminClient.Create();
            // Initialize request argument(s)
            string projectId = "";
            IDictionary <string, string> labels = new Dictionary <string, string> {
                { "", "" },
            };
            string       inputUrl     = "";
            EntityFilter entityFilter = new EntityFilter();
            // Make the request
            Operation <Empty, ImportEntitiesMetadata> response = datastoreAdminClient.ImportEntities(projectId, labels, inputUrl, entityFilter);

            // Poll until the returned long-running operation is complete
            Operation <Empty, ImportEntitiesMetadata> completedResponse = response.PollUntilCompleted();
            // Retrieve the operation result
            Empty 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 <Empty, ImportEntitiesMetadata> retrievedResponse = datastoreAdminClient.PollOnceImportEntities(operationName);

            // Check if the retrieved long-running operation has completed
            if (retrievedResponse.IsCompleted)
            {
                // If it has completed, then access the result
                Empty retrievedResult = retrievedResponse.Result;
            }
            // End snippet
        }