src/Riak/Command/Builder/IndexTrait.php
public function withScalarValue($value)
    {
        $this->match = $value;
        $this->lowerBound = null;
        $this->upperBound = null;
        return $this;
    }
public function withScalarValue($value)
    {
        $this->match = $value;
        $this->lowerBound = null;
        $this->upperBound = null;
        return $this;
    }
Adds the scalar index query information to the Command

@param $value

@return $this