trait

gistfile1.phtml

<?php

class Eloquent {

}

class Sentry extends Eloquent {

	protected $guarded = [
		'sentry column',
	];

}

class Vocal extends Eloquent {

	protected $guarded = [
		'vocal column',
	];

}

trait UserTraits {

	protected $guarded = [
		'password',
	];

}

class SentryUser extends Sentry {

	use UserTraits;

}

class VocalUser extends Vocal {

	use UserTraits;

}

$foo = new SentryUser;

var_dump($foo);

// Cartalyst\Sentry\Users\Eloquent\User and App\Traits define the same property ($guarded) in the composition of App\Model. 
// However, the definition differs and is considered incompatible. Class was composed