/**
* Compile a primary key command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compilePrimary(Blueprint $blueprint, Fluent $command)
{
$command->name(null);
return $this->compileKey($blueprint, $command, 'primary key');
}
