One to Many Relationship. Implementing --associate

'''
Hi,
I have,

Tables:
businesses
briefcases

So, a briefcase can have many business.

Business Model:

  public function briefcase(): belongsTo
  {
      return $this->belongsTo(Briefcase::class);
  }

  public function briefcase(): belongsTo
  {
      return $this->belongsTo(Briefcase::class);
  }

  public function briefcase(): belongsTo
  {
      return $this->belongsTo(Briefcase::class);
  }

  public function briefcase(): belongsTo
  {
      return $this->belongsTo(Briefcase::class);
  }

Briefcase Model:

  public function businesses(): hasMany
  {
      return $this->hasMany(Business::class);
  }

  public function businesses(): hasMany
  {
      return $this->hasMany(Business::class);
  }

  public function businesses(): hasMany
  {
      return $this->hasMany(Business::class);
  }

  public function businesses(): hasMany
  {
      return $this->hasMany(Business::class);
  }

Relation Manager --associate:

php artisan make:filament-relation-manager BriefcaseResource businesses name --view --associate

php artisan make:filament-relation-manager BriefcaseResource businesses name --view --associate

php artisan make:filament-relation-manager BriefcaseResource businesses name --view --associate

php artisan make:filament-relation-manager BriefcaseResource businesses name --view --associate

When trying to associate a business I get:

Call to undefined method App\Models\Business::briefcases()

Call to undefined method App\Models\Business::briefcases()

Call to undefined method App\Models\Business::briefcases()

Call to undefined method App\Models\Business::briefcases()

Any suggestions?
Thank you.