public function randMember($count = null)
    {
        $return = $this->redis->srandmember($this->key, $count);

        return \is_array($return) ? $this->unSerializeArray($return) : $this->unSerialize($return);
    }
public function randMember($count = null)
    {
        $return = $this->redis->srandmember($this->key, $count);

        return \is_array($return) ? $this->unSerializeArray($return) : $this->unSerialize($return);
    }
@param null $count Amount of members to randomly take from set.
Positive: return $count distinct members.
Negative: return -$count members. Can return elements multiple times. Fills until length of
-$count.
Zero: empty set.
Null (default): return one element (not as set).

@return mixed|mixed[] Array of or a single member of set.