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/*******************************************************************************
*
* Copyright (c) 2025 - 2026 Haixing Hu.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0.
*
******************************************************************************/
//! Traits for email address property functionality
//!
/// A trait indicating that an entity class has an email address property
///
/// This trait provides access and setting functionality for the email
/// address of domain objects.
///
/// # Example
///
/// ```rust
/// use qubit_mixin::WithEmail;
///
/// struct Contact {
/// name: String,
/// email: String,
/// }
///
/// impl WithEmail for Contact {
/// fn email(&self) -> &str {
/// &self.email
/// }
///
/// fn set_email(&mut self, email: &str) {
/// self.email = email.to_string();
/// }
/// }
///
/// let mut contact = Contact {
/// name: "Alice".to_string(),
/// email: "alice@example.com".to_string(),
/// };
/// assert_eq!(contact.email(), "alice@example.com");
///
/// contact.set_email("alice.new@example.com");
/// assert_eq!(contact.email(), "alice.new@example.com");
/// ```
///