Add one Prodable object to this Looper's list of Prodables

        :param prodable: the Prodable object to add

def add(self, prodable: Prodable) -> None:
        """
        Add one Prodable object to this Looper's list of Prodables

        :param prodable: the Prodable object to add
        """
        if prodable.name in [p.name for p in self.prodables]:
            raise ProdableAlreadyAdded("Prodable {} already added.".
                                       format(prodable.name))
        self.prodables.append(prodable)
        if self.autoStart:
            prodable.start(self.loop)