public HttpRequest setBody(final Object body) {
        this.body = body;
        return this;
    }
Set the HTTP body of the request. During processing, the body can be any type but the final interceptor must set
the body to a {@code byte[]}.

@return this HttpRequest for method chaining.
gremlin-driver/src/main/java/org/apache/tinkerpop/gremlin/driver/HttpRequest.java