def add_numbers(number1: int, number2: int) -> int:
    """Add two numbers together.

    Args:
        number1 (int): The first number.
        number2 (int): The second number.

    Returns:
        int: The sum of number1 + number2.

    Examples:
        >>> add_numbers(10, 5)
        15
    """
    return number1 + number2