Add a file as a resource.

        In Sacred terminology a resource is a file that the experiment needed
        to access during a run. In case of a MongoObserver that means making
        sure the file is stored in the database (but avoiding duplicates) along
        its path and md5 sum.

        See also :py:meth:`sacred.Experiment.add_resource`.

        Parameters
        ----------
        filename : str
            name of the file to be stored as a resource

def add_resource(self, filename):
        """Add a file as a resource.

        In Sacred terminology a resource is a file that the experiment needed
        to access during a run. In case of a MongoObserver that means making
        sure the file is stored in the database (but avoiding duplicates) along
        its path and md5 sum.

        See also :py:meth:`sacred.Experiment.add_resource`.

        Parameters
        ----------
        filename : str
            name of the file to be stored as a resource
        """
        filename = os.path.abspath(filename)
        self._emit_resource_added(filename)