"""Generate synthetic data and evaluate their quality."""

def identity(x):
    """Identity function. Return the input dataset.

    :param x: Dataset.
    :type x: fetch_data.Dataset
    :return: Return the input x as is.
    :rtype: fetch_data.Dataset
    """
    return x

def vae(x):
    """Place holder for vae. At the moment, return the input dataset.

    :param x: Dataset.
    :type x: pandas.dataframe
    """
    return x
