def METHOD_NAME(cls):
    METHOD_NAME = super().METHOD_NAME()
    METHOD_NAME.update({
        'eps': NumberField(
            optional=True, default=1E-16,
            description="Epsilon to avoid nan during calculations",
            value_type=float
        )
    })
    METHOD_NAME.update({
        'length': NumberField(
            default=1001, description="Length of input feature vector for metric",
            value_type=int
        )
    })
    return METHOD_NAME