assertEquals(0, valueMethod.getParameterCount());
    }

    // Test class with single role
    @Secured({ "ROLE_USER" })
    static class SingleRoleClass {
        public void testMethod() {
        }
    }

    // Test class with multiple roles
    @Secured({ "ROLE_USER", "ROLE_ADMIN" })
    static class MultipleRolesClass {
        public void testMethod() {
        }
    }

 * @author FessProject
 */
public class ChatMessage implements Serializable {

    private static final long serialVersionUID = 1L;

    /** The role identifier for user messages. */
    public static final String ROLE_USER = "user";

    /** The role identifier for assistant messages. */
    public static final String ROLE_ASSISTANT = "assistant";

    /** The unique identifier for this message. */
    private String id;

        assertEquals(4, messages.size());
        assertEquals(ChatMessage.ROLE_USER, messages.get(0).getRole());
        assertEquals("User 2", messages.get(0).getContent());
        assertEquals(ChatMessage.ROLE_ASSISTANT, messages.get(1).getRole());
        assertEquals("Assistant 2", messages.get(1).getContent());
        assertEquals(ChatMessage.ROLE_USER, messages.get(2).getRole());
        assertEquals("User 3", messages.get(2).getContent());