public void setUsernameField(UsernameField usernameField) {
        this.usernameField = usernameField;
    }
<p>
The name of the field in the request payload that contains your customer's username.
</p>
<p>
How you specify this depends on the request inspection payload type.
</p>
<ul>
<li>
<p>
For JSON payloads, specify the field name in JSON pointer syntax. For information about the JSON Pointer syntax,
see the Internet Engineering Task Force (IETF) documentation <a
href="https://tools.ietf.org/html/rfc6901">JavaScript Object Notation (JSON) Pointer</a>.
</p>
<p>
For example, for the JSON payload <code>{ "form": { "username": "THE_USERNAME" } }</code>, the username field
specification is <code>/form/username</code>.
</p>
</li>
<li>
<p>
For form encoded payload types, use the HTML form names.
</p>
<p>
For example, for an HTML form with the input element named <code>username1</code>, the username field
specification is <code>username1</code>
</p>
</li>
</ul>

@param usernameField
       The name of the field in the request payload that contains your customer's username. </p>
       <p>
       How you specify this depends on the request inspection payload type.
       </p>
       <ul>
       <li>
       <p>
       For JSON payloads, specify the field name in JSON pointer syntax. For information about the JSON Pointer
       syntax, see the Internet Engineering Task Force (IETF) documentation <a
       href="https://tools.ietf.org/html/rfc6901">JavaScript Object Notation (JSON) Pointer</a>.
       </p>
       <p>
       For example, for the JSON payload <code>{ "form": { "username": "THE_USERNAME" } }</code>, the username
       field specification is <code>/form/username</code>.
       </p>
       </li>
       <li>
       <p>
       For form encoded payload types, use the HTML form names.
       </p>
       <p>
       For example, for an HTML form with the input element named <code>username1</code>, the username field
       specification is <code>username1</code>
       </p>
       </li>
aws-java-sdk-wafv2/src/main/java/com/amazonaws/services/wafv2/model/RequestInspectionACFP.java