[L5.5] HasManyThrough signature incompatible with Laravel's HasManyThrough

[mmvcode]

Expected behavior

In a hasManyThrough relation using October's HasManyThrough, the constructor calls the parent with 6 arguments. However, the parent class, Illuminate\Database\Eloquent\Relations\HasManyThrough
requires 7.

Actual behavior

Type error: 
Too few arguments to function Illuminate\Database\Eloquent\Relations\HasManyThrough::__construct(), 6 passed in
 vendor\october\rain\src\Database\Relations\HasManyThrough.php on line 24 and exactly 7 expected
vendor\laravel\framework\src\Illuminate\Database\Eloquent\Relations\HasManyThrough.php line 67

Reproduce steps

Add a hasManyThrough relation to a model.

October build

421

[KonstantinObuhov]

I have the same problem.
I add relation like this.

cities
id - integer
name - string

serts
id - integer
city_id - integer
name - string

sert_orders
id - integer
sert_id - integer

[mmvcode]

Just as a note, this only happens when using the $hasManyThrough = []; property, it works fine when defining relations through methods.

[daftspunk]

Should be fixed in Build 422+