name = $name; } public function setColumn(SchemaColumn $column): void { $this->columns[$column->name] = $column; } public function renameColumn(string $oldName, string $newName): void { if (! isset($this->columns[$oldName])) { return; } $oldColumn = $this->columns[$oldName]; unset($this->columns[$oldName]); $oldColumn->name = $newName; $this->columns[$newName] = $oldColumn; } public function dropColumn(string $columnName): void { unset($this->columns[$columnName]); } }