Grid/Grid.php
public function setMaxResults($maxResults = null)
    {
        if ((is_int($maxResults) && $maxResults < 0) && $maxResults !== null) {
            throw new \InvalidArgumentException(self::NOT_VALID_MAX_RESULT_EX_MSG);
        }

        $this->maxResults = $maxResults;

        return $this;
    }
public function setMaxResults($maxResults = null)
    {
        if ((is_int($maxResults) && $maxResults < 0) && $maxResults !== null) {
            throw new \InvalidArgumentException(self::NOT_VALID_MAX_RESULT_EX_MSG);
        }

        $this->maxResults = $maxResults;

        return $this;
    }
Sets the max results of the grid.

@param int $maxResults

@throws \InvalidArgumentException

@return self