- sets the auto-generated ids to be positive for user-friendliness

Author: baywet

src/main/java/com/microsoft/graph/content/MSBatchRequestContent.java

@@ -69,7 +69,7 @@ public boolean addBatchRequestStep(final MSBatchRequestStep batchRequestStep) {
 	public String addBatchRequestStep(final Request request, final String... arrayOfDependsOnIds) {
 		String requestId;
 		do {
-			requestId = Integer.toString(ThreadLocalRandom.current().nextInt());
+			requestId = Integer.toString(ThreadLocalRandom.current().nextInt(1, Integer.MAX_VALUE));
 		} while(batchRequestStepsHashMap.keySet().contains(requestId));
 		if(addBatchRequestStep(new MSBatchRequestStep(requestId, request, Arrays.asList(arrayOfDependsOnIds))))
 			return requestId;