title: PHP DocuSign API - Create a non-required field
body: <p>I am using the PHP library provided by DocuSign within my application.</p>
  
  <p>I would like to know how to create a text field that is NOT required to be filled in by the user.</p>
  
  <p>Here's a snippet of what I'm doing.</p>
  
  <pre><code>$text = new \DocuSign\eSign\Model\SignHere();
  $text-&gt;setAnchorString("Name");
  $text-&gt;setAnchorXOffset("100");
  $text-&gt;setAnchorYOffset("-20");
  $text-&gt;setTabLabel("Name");
  $text-&gt;setName("Name");
  $text_tabs[] = $text;
  
  $tabs = new DocuSign\eSign\Model\Tabs();
  $tabs-&gt;setTextTabs($text_tabs);
  </code></pre>
  
  <p>I want this field to be optional but it's always required when trying to complete the signing process.</p>
  
  <p>Any help would be appreciated!</p>