[10.x] createMany & createManyQuietly make argument optional

[JHWelch]

This builds on the changes from #48048. This allows createMany() to be called on a factory with no argument and still always return a collection of the model.

If the number of models has been specified with count($x) or times($x), that will be used to create $x many models.

If the number of models has not been specified, it will simply return a collection with a single model.

// Collection of 3 Users
User::factory()->count(3)->createMany();

// Collection of 1 User
User::factory()->createMany();

createMany is useful for static typing because it always returns an Eloquent Collection, similar to how the createOne method always returns a single model. create always requires a type check.

[utsavsomaiya]

If you need wrap into collection...

Try this: