def METHOD_NAME(self, name, value, dimensions=None):
    """
    Add a Error Metric
    Parameters
    ----------
    name : str
        metric name
    value: str
        value of metric, in this case a str
    dimensions: list
        list of dimensions for the metric
    """
    unit = ''
    # noinspection PyTypeChecker
    self._add_or_update(name, value, None, unit, dimensions)