The result of a command is a `Model <http://docs.aws.amazon.com/aws-sdk-php/latest/class-Guzzle.Service.Resource.Model.html>`_
(``Guzzle\Service\Resource\Model``) object. This object contains the data from a response body and can be used like an
array (e.g., ``$result['TableName']``). It also has convenience methods like ``get()``, ``getPath()``, and
``toArray()``. The contents of the response model depend on the command that was executed and are documented in the API
docs for each operation (e.g., see the *Returns* section in the API docs for the `S3 GetObject operation
<http://docs.aws.amazon.com/aws-sdk-php/latest/class-Aws.S3.S3Client.html#_getObject>`_).

.. code-block:: php

    // Use an instance of S3Client to get an object
    $result = $client->getObject(array(
        'Bucket' => 'my-bucket',
        'Key'    => 'test.txt'
    ));

    // Introspect the keys
    var_export($result->getKeys());
    //> array( 'Body', 'ContentLength', 'DeleteMarker', 'Expiration', ... )

    // Get a value
    echo $result['ContentLength'];
    // OR
    echo $result->get('ContentLength');
    //> 6

    // Get a nested value
    echo $result->getPath('Metadata/CustomValue');
    //> Testing123

    // Get an array of the data
    var_export($result->toArray());
    //> array ( 'Body' => 'Hello!' , 'ContentLength' => 6, ... )

