source types. If the resource      type is optional (not indicated as required), then you can choose to use one of the optional      resource types.
           </p>
           <p>
            The
            <b>
             Condition keys
            </b>
            column of the Actions table includes keys that you      can specify in a policy statement's
            <code class="code">
             Condition
            </code>
            element. For more information on      the condition keys that ar