anchor.diff:  Shows output:
   +
   ```
  -
  +{
  +    "CodeSha256": "xmxaHL4Btui3xMeqX9NGHQHQ50ZI+/Y+6HQWtmWWp+8=", 
  +    "FunctionName": "HelloCouchbaseLambda", 
  +    "CodeSize": 11815, 
  +    "MemorySize": 1024, 
  +    "FunctionArn": "arn:aws:lambda:us-west-1:598307997273:function:HelloCouchbaseLambda", 
  +    "Version": "1", 
  +    "Role": "arn:aws:iam::598307997273:role/service-role/myLambdaRole", 
  +    "Timeout": 30, 
  +    "LastModified": "2016-12-25T00:26:06.182+0000", 
  +    "Handler": "org.sample.serverless.aws.couchbase.HelloCouchbase", 
  +    "Runtime": "java8", 
  +    "Description": "Java Hello Couchbase"
  +}
   ```
   +
  -. Test the function:
  +. Invoke the function:
   +
   ```
  -aws lambda invoke --function-name HelloCouchbaseLambda --region us-west-1 --payload '' hellocouchbase.out
  +aws lambda invoke \
  +--function-name HelloCouchbaseLambda \
  +--region us-west-2 \
  +hellocouchbase.out
   ```
   +
  -Shows result:
  +Shows output:
   +
   ```
   {
  
positive.code: {
      "Code": {
          "RepositoryType": "S3", 
          "Location": "https://awslambda-us-west-1-tasks.s3-us-west-1.amazonaws.com/snapshots/598307997273/HelloWorld-b3621a51-aa28-498a-9a69-7541bc9a50f5?X-Amz-Security-Token=FQoDYXdzEEwaDPvHdO71iR5QlQxFpSK3AwIyaqiqO6N47IcWGJios%2FvWg79kcFh%2BVRHCfstcCWFCs2qC5ojZ4r%2F4LEmFL6aLTSNVZEpfJwSpi3a2xpYgqUdd3jJfR7nK8XnTqbF2n87xUANO1xnnRryNlDFpVLwTBOq5haCSqNXoQLgVEA6RNzhmOpNEBN136dnebVtGFZkkweXE7SHtV%2BzVfGzShgxWIDj8oCr2YEREIVdfmlRZ7QnMYKCfUIGDezC0iLIQeXnwMvZp1BC6dq6CDC6KOiZ6kp8SxJikKnoiSFtYcDPQacNl05fqbt7cGFmdtrHbRLyibYxCwB%2FsXQueA7iXiuVARVzOw9HvIEnvN5geT68r%2Fy0DnlRUPtw5ZUu%2FHT66uNGEn8pS8ki6k2fQWbSoIploBGA7l8H%2FmqEmg7dlc68UKnmYLaAv8GDInA9K7ndL%2Fs0%2BD3Gv7WJMEPXiOpTuh1lvRZ%2BGXXwQcuDfZX0i3L6elgFfDPh7CIpwZGvYmn22oiU%2Bgqc%2FjDSvGaOTzLGMjSodfaN%2BuhFvFAcv%2FsAUtIgZ5LksFkC%2FW189CzLFS7HyIE%2BofPUesP75p67Rm2G%2FDBWfkaYq886GRfIo8c%2FgwgU%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20161219T195528Z&X-Amz-SignedHeaders=host&X-Amz-Expires=600&X-Amz-Credential=ASIAJLAOLVLJ3LXPJOFQ%2F20161219%2Fus-west-1%2Fs3%2Faws4_request&X-Amz-Signature=82d2497a61e9ae749901b8532b77cf9cbbdff8db33538bd74a1d0ee9d4cf61c8"
      }, 
      "Configuration": {
          "Version": "$LATEST", 
          "CodeSha256": "7kxVI356SYg7vg9BdLRSEJ2U7MaMbhwOZG9P7iNlMsM=", 
          "FunctionName": "HelloWorld", 
          "MemorySize": 1024, 
          "CodeSize": 11782, 
          "FunctionArn": "arn:aws:lambda:us-west-1:598307997273:function:HelloWorld", 
          "Handler": "org.sample.serverless.aws.helloworld.HelloWorld", 
          "Role": "arn:aws:iam::598307997273:role/service-role/myLambdaRole", 
          "Timeout": 30, 
          "LastModified": "2016-12-16T03:02:34.590+0000", 
          "Runtime": "java8", 
          "Description": "Java Hello World"
      }
  }
  ```
  
negative.code: }
  ```
  +
  . Update the function:
  +
  ```
  aws lambda update-function-code \
  --function-name HelloCouchbaseLambda \
  --zip-file fileb:///Users/arungupta/workspaces/serverless/aws/hellocouchbase/hellocouchbase/target/hellocouchbase-1.0-SNAPSHOT.jar \
  --region us-west-2 \
  --publish
  ```
  +
  Shows result:
  +
  ```
  {
      "CodeSha256": "w510ejw/OoVsQt2JiLG2bPZPAaFvQCRrYYYlQWctCQE=", 
      "FunctionName": "HelloCouchbaseLambda", 
      "CodeSize": 6978108, 
      "MemorySize": 1024, 
      "FunctionArn": "arn:aws:lambda:us-west-2:598307997273:function:HelloCouchbaseLambda:8", 
      "Environment": {
          "Variables": {
              "COUCHBASE_HOST": "ec2-35-165-249-235.us-west-2.compute.amazonaws.com"
          }
      }, 
      "Version": "8", 
      "Role": "arn:aws:iam::598307997273:role/service-role/myLambdaRole", 
      "Timeout": 30, 
      "LastModified": "2016-12-25T04:17:38.717+0000", 
      "Handler": "org.sample.serverless.aws.couchbase.HelloCouchbaseLambda", 
      "Runtime": "java8", 
      "Description": "Java Hello Couchbase"
  }
  ```
  +
  Output from the command is in `hellocouchbase.out`.
  +
  . Get more details about the function:
  +
  