@Override
    protected Node createNode() {
        ObjectNode.Builder builder = Node.objectNodeBuilder().sourceLocation(getSourceLocation());
        if (!getHttp().isEmpty()) {
            builder.withMember(HTTP, Node.fromStrings(getHttp()));
        }
        if (!getEventStreamHttp().isEmpty()) {
            builder.withMember(EVENT_STREAM_HTTP, Node.fromStrings(getEventStreamHttp()));
        }
        return builder.build();
    }
Gets the priority ordered list of supported HTTP protocol versions that are required when
using event streams.

@return Returns the supported event stream HTTP protocol versions.
smithy-protocol-traits/src/main/java/software/amazon/smithy/protocol/traits/Rpcv2CborTrait.java