class Cat(Animal):
    """
    Represents a domestic cat, inheriting from the `Animal` base class.
    
    Bla bla.

    Attributes:

    - `massa` (`int`): The weight of the cat in kilograms, default is 5.
    """

    massa: int = 5

    def say() -> str:
        """
        Produces the sound a cat makes.

        Returns:

        `str`: 'Meow' — a sound typically associated with cats.
        """
        return "Meow"

@bla
def add(a: int, b: int) -> int:
    """
    Adds two integers.

    Args:

    - `a` (`int`): The first integer to add.
    - `b` (`int`): The second integer to add.

    Returns:

    - `int`: The sum of a and b.
    """
    return a + b
    
    
def multiply(a: int, b: int) -> int:
    """
    Multiples two integers.

    Args:

    - `a` (`int`): The first integer to add.
    - `b` (`int`): The second integer to add.

    Returns:

    - `int`: The sum of a and b.
    """
    return a + b