Grid/Columns.php
public function getColumnById($columnId)
    {
        if (($column = $this->hasColumnById($columnId, true)) === false) {
            throw new \InvalidArgumentException(sprintf(self::MISSING_COLUMN_EX_MSG, $columnId));
        }

        return $column;
    }
public function getColumnById($columnId)
    {
        if (($column = $this->hasColumnById($columnId, true)) === false) {
            throw new \InvalidArgumentException(sprintf(self::MISSING_COLUMN_EX_MSG, $columnId));
        }

        return $column;
    }
@param $columnId

@throws \InvalidArgumentException

@return Column