src/Riak/Command/Builder/IndexTrait.php
public function withRangeValue($lowerBound, $upperBound)
    {
        $this->lowerBound = $lowerBound;
        $this->upperBound = $upperBound;
        $this->match = null;

        return $this;
    }
public function withRangeValue($lowerBound, $upperBound)
    {
        $this->lowerBound = $lowerBound;
        $this->upperBound = $upperBound;
        $this->match = null;

        return $this;
    }
Adds the range index query information to the Command

@param $lowerBound
@param $upperBound

@return $this