عدم شناسایی متد contain

با سلام من هنگام که از طریق یک کنترلر مقدار role به متد hasrole مربوط به مدل user ارسال می کنم
با ارور زیر مواجح میشم

Call to undefined method Illuminate\Database\Eloquent\Relations\BelongsToMany::contains()

User.php

<?php

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'email_verified_at' => 'datetime',
    ];

    public function article()
    {

        return $this->hasMany(Article::class);
    }

    public function roles()
    {

        return $this->belongsToMany(role::class);
    }

    public function hasRole($role)
    {
        if (is_string($role)) {
            return $this->roles()->contains('name', $role);
        }

    }
}

اینم کد مربوط به کنتر لر

return Auth()->user()->hasrole('maneger');

@hesammousavi
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