def GetEntry(self, entry):
        """
        Get an entry. Tree collections are reset
        (see ``rootpy.tree.treeobject``)

        Parameters
        ----------
        entry : int
            entry index

        Returns
        -------
        ROOT.TTree.GetEntry : int
            The number of bytes read
        """
        if not (0 <= entry < self.GetEntries()):
            raise IndexError("entry index out of range: {0:d}".format(entry))
        self._buffer.reset_collections()
        return super(BaseTree, self).GetEntry(entry)
Get an entry. Tree collections are reset
        (see ``rootpy.tree.treeobject``)

        Parameters
        ----------
        entry : int
            entry index

        Returns
        -------
        ROOT.TTree.GetEntry : int
            The number of bytes read