问Symfony 2，对不好的角色返回true

EN

role_hierarchy:
        ROLE_USER: [ROLE_CLIENT, ROLE_CHAT]
        ROLE_ADMIN:       ROLE_USER
        ROLE_SUPER_ADMIN: ROLE_ADMIN

array:2 [▼
  0 => Role {#333 ▼
    -role: "ROLE_CHAT"
  }
  1 => Role {#334 ▼
    -role: "ROLE_USER"
  }
]
You  cant't see this.

{% block content %}
    <h1>Client panel</h1>
    {{ dump(app.security.token.roles) }}


{% if is_granted('ROLE_CLIENT') %} You can't see this. {% endif %}


{% endblock %}