private static String createMessage(HttpBinding binding) {
        MemberShape member = binding.getMember();
        return String.format(
                "The `httpPrefixHeaders` trait is not supported by OpenAPI and was found on `%s`",
                member.getId());
    }
Checks for prefix headers in the input or output of an operation,
and handles the settings for throwing an exception or warning if
they're found.

<p>Custom values for this setting need to be handled in a
{@link OpenApiProtocol}.
smithy-openapi/src/main/java/software/amazon/smithy/openapi/fromsmithy/mappers/CheckForPrefixHeaders.java