code: @Override
    public CqlQuery<K, N, V> setCqlVersion(String version){
      this.cqlVersion=version;
      if (this.cqlVersion.startsWith("3")) {
      	cql3 = true;
      }
      return this;
    }
docs: Method will check to see if the version starts with "3" and set
  the boolean cql3 to true. This makes it easier for execute
  method and avoids doing lots of cqlVersion.startsWith() tests.