Grid/GridBuilder.php
public function get($name)
    {
        if (!$this->has($name)) {
            throw new InvalidArgumentException(sprintf('The column with the name "%s" does not exist.', $name));
        }

        $column = $this->columns[$name];

        return $column;
    }
public function get($name)
    {
        if (!$this->has($name)) {
            throw new InvalidArgumentException(sprintf('The column with the name "%s" does not exist.', $name));
        }

        $column = $this->columns[$name];

        return $column;
    }
{@inheritdoc}