library/Rediska/Key.php
public function getOrSetValue($object = null, $expire = null, $expireIsTimestamp = false)
    {
        return new Rediska_Key_GetOrSetValue($this, $object, $expire, $expireIsTimestamp);
    }
public function getOrSetValue($object = null, $expire = null, $expireIsTimestamp = false)
    {
        return new Rediska_Key_GetOrSetValue($this, $object, $expire, $expireIsTimestamp);
    }
Get value, if value not present set it from chain method

@param mixin[optional]   $object            Object of chain method
@param integer[optional] $expire            Expire
@param boolean[optional] $expireIsTimestamp If true $expire argument in seconds, or $expire is timestamp
@return Rediska_Key_GetOrSetValue