import torch


def consistency_loss(Z_cf_pred: torch.Tensor, Z_cf_tgt: torch.Tensor):
    """
    Default 0 consistency loss.

    Parameters
    ----------
    Z_cf_pred
        Counterfactual embedding prediction.
    Z_cf_tgt
        Counterfactual embedding target.

    Returns
    -------
        0 consistency loss.
    """
    return {"consistency_loss": 0}