Set initial guess method to be used for SCF

        Args:
            guess: The initial guess method. (str)

def set_scf_initial_guess(self, guess="SAD"):
        """
        Set initial guess method to be used for SCF

        Args:
            guess: The initial guess method. (str)
        """
        availabel_guesses = {"core", "sad", "gwh", "read", "fragmo"}
        if guess.lower() not in availabel_guesses:
            raise ValueError("The guess method " + guess + " is not supported "
                                                           "yet")
        self.params["rem"]["scf_guess"] = guess.lower()