'Do nothing (for scikit-learn compatibility purposes).
Parameters
X : array, shape (n_epochs, n_channels, n_times) or or shape (n_channels, n_times) # noqa
The data to be filtered over the last dimension. The channels
dimension can be zero when passing a 2D array.
y : None
Not used, for scikit-learn compatibility issues.
Returns
self : instance of Filterer
Returns the modified instance.'

def fit(self, X, y=None):

    return self
