Change operation IDs to hashed values

Author: nvasiu

sdk-integration-tests/src/test/java/software/amazon/lambda/durable/IntegrationTest.java

@@ -2,12 +2,13 @@
 // SPDX-License-Identifier: Apache-2.0
 package software.amazon.lambda.durable;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertThrows;
-
 import java.time.Duration;
 import java.util.concurrent.atomic.AtomicInteger;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 import org.junit.jupiter.api.Test;
+
 import software.amazon.awssdk.services.lambda.model.OperationStatus;
 import software.amazon.awssdk.services.lambda.model.OperationType;
 import software.amazon.lambda.durable.model.ExecutionStatus;
@@ -110,12 +111,12 @@ void testFullWaitOperation() {
 
         assertEquals(ExecutionStatus.SUCCEEDED, result.getStatus());
         assertEquals(3, result.getSucceededOperations().size());
-        assertEquals("Step 1 done", result.getSucceededOperations().get(0).getStepResult(String.class));
+        assertEquals("Step 1 done", result.getOperation("step1").getStepResult(String.class));
         assertEquals(OperationType.WAIT, result.getSucceededOperations().get(1).getType());
         assertEquals(
                 OperationStatus.SUCCEEDED,
                 result.getSucceededOperations().get(1).getStatus());
-        assertEquals("Step 2 done", result.getSucceededOperations().get(2).getStepResult(String.class));
+        assertEquals("Step 2 done", result.getOperation("step2").getStepResult(String.class));
         assertEquals("Step 1 done + Step 2 done", result.getResult(TestOutput.class).result);
     }