laravel5.4 中使用bian/can出现如下问题

namespace App\Models;

use Illuminate\Auth\Authenticatable;
use Illuminate\Notifications\Notifiable;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Auth\Passwords\CanResetPassword;
use Illuminate\Foundation\Auth\Access\Authorizable;
use Illuminate\Contracts\Auth\Authenticatable as AuthenticatableContract;
use Illuminate\Contracts\Auth\Access\Authorizable as AuthorizableContract;
use Illuminate\Contracts\Auth\CanResetPassword as CanResetPasswordContract;

use Bican\Roles\Traits\HasRoleAndPermission;
use Bican\Roles\Contracts\HasRoleAndPermission as HasRoleAndPermissionContract;

class User extends Model implements

AuthenticatableContract,
AuthorizableContract,
CanResetPasswordContract,
HasRoleAndPermissionContract

{

//因为laravel自带的Authorizable中有can方法，扩展包HasRoleAndPermission中也有can方法,现在要使用扩展包的can
use Notifiable, Authenticatable, Authorizable, CanResetPassword, HasRoleAndPermission{
    HasRoleAndPermission::can insteadof Authorizable; //A insteadof B 的意思是A代替B
}

结果报了个这样的错误 请问有什么办法可以解决？
Declaration of Bican\Roles\Traits\HasRoleAndPermission::is($role, $all = false) should be compatible with Illuminate\Database\Eloquent\Model::is(Illuminate\Database\Eloquent\Model $model)