public DeleteStackInstancesRequest withCallAs(String callAs) {
        setCallAs(callAs);
        return this;
    }
<p>
[Service-managed permissions] Specifies whether you are acting as an account administrator in the organization's
management account or as a delegated administrator in a member account.
</p>
<p>
By default, <code>SELF</code> is specified. Use <code>SELF</code> for stack sets with self-managed permissions.
</p>
<ul>
<li>
<p>
If you are signed in to the management account, specify <code>SELF</code>.
</p>
</li>
<li>
<p>
If you are signed in to a delegated administrator account, specify <code>DELEGATED_ADMIN</code>.
</p>
<p>
Your Amazon Web Services account must be registered as a delegated administrator in the management account. For
more information, see <a
href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/stacksets-orgs-delegated-admin.html"
>Register a delegated administrator</a> in the <i>CloudFormation User Guide</i>.
</p>
</li>
</ul>

@param callAs
       [Service-managed permissions] Specifies whether you are acting as an account administrator in the
       organization's management account or as a delegated administrator in a member account.</p>
       <p>
       By default, <code>SELF</code> is specified. Use <code>SELF</code> for stack sets with self-managed
       permissions.
       </p>
       <ul>
       <li>
       <p>
       If you are signed in to the management account, specify <code>SELF</code>.
       </p>
       </li>
       <li>
       <p>
       If you are signed in to a delegated administrator account, specify <code>DELEGATED_ADMIN</code>.
       </p>
       <p>
       Your Amazon Web Services account must be registered as a delegated administrator in the management
       account. For more information, see <a href=
       "https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/stacksets-orgs-delegated-admin.html"
       >Register a delegated administrator</a> in the <i>CloudFormation User Guide</i>.
       </p>
       </li>
@return Returns a reference to this object so that method calls can be chained together.
@see CallAs
aws-java-sdk-cloudformation/src/main/java/com/amazonaws/services/cloudformation/model/DeleteStackInstancesRequest.java