def train_leakage(self,data=None,
                      batch_size=5,
                      epochs=20,
                      learning_rate=2e-5,
                      verbose=1):
        """
        Trains the digital twin for leakage current model with experimental data
        Args:
            data: The training data, expected as a Pandas DataFrame
            batch_size (int): Training batch size
            epochs (int): Number of epochs for training
            learning_rate (float): Learning rate for training
            verbose (0 or 1): Verbosity of display while training
        """