public Optional<String> getContentHandling() {
        return Optional.ofNullable(contentHandling);
    }
Get the Request payload encoding conversion types.

<p>Valid values are:

<ul>
    <li>CONVERT_TO_TEXT, for converting a binary payload into a
    Base64-encoded string or converting a text payload into a
    utf-8-encoded string or passing through the text payload natively
    without modification</li>
    <li>CONVERT_TO_BINARY, for converting a text payload into
    Base64-decoded blobor passing through a binary payload natively
    without modification.</li>
</ul>

@return Returns the content-handling.
smithy-aws-apigateway-traits/src/main/java/software/amazon/smithy/aws/apigateway/traits/IntegrationTrait.java