

class ArteriaUsageException(Exception):
    """
    Exception base class for Arteria handled usage exceptions.
    """

    pass


class ArteriaUsageException(Exception):
    """
    Exception base class for Arteria handled usage exceptions.
    """
    pass


class InvalidArteriaStateException(Exception):
    """
    Exception thrown when faced with an invalid state.
    """
    pass
Add InvalidArteriaStateException