/**
 * Copyright 2014 Microsoft Open Technologies Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.microsoftopentechnologies.intellij.helpers.azure.sdk;

import com.microsoftopentechnologies.intellij.helpers.azure.AzureCmdException;
import com.microsoftopentechnologies.intellij.model.vm.VirtualMachine;

import java.util.List;

public interface AzureSDKManager {
    List<VirtualMachine> getVirtualMachines(String subscriptionId) throws AzureCmdException;
}

@@ -829,16 +829,58 @@
 Machine;
+%0Aimport org.jetbrains.annotations.NotNull;
 %0A%0Aimport
@@ -932,16 +932,29 @@
 nager %7B%0A
+    @NotNull%0A
     List
@@ -989,16 +989,25 @@
 achines(
+@NotNull 
 String s

Add NPE validation