public Optional<String> getContentHandling() {
        return Optional.ofNullable(contentHandling);
    }
Gets the response payload content handling type.

<p>Valid values are 1) 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, and 2) CONVERT_TO_BINARY, for converting a text
payload into Base64-decoded blob or passing through a binary payload
natively without modification.

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