column_name = $column_name; } /** * @inheritdoc */ public function render(array $mailArray, $format) { if( ! array_key_exists($this->column_name, $mailArray) ) { throw new ColumnDoesntExistException($this->column_name); } return $mailArray[$this->column_name]; } /** * Get the column name. * * @since 1.15.0 */ public function getColumnName() { return $this->column_name; } }