'Finds the children of a path.
:param path: the path to find the children.
:return Yields the childrens.'

def _get_children(self, path):

    father = self.treestore.get_iter(path)
    howmanychilds = self.treestore.iter_n_children(father)
    for i in range(howmanychilds):
        child = self.treestore.iter_nth_child(father, i)
        treerow = self.treestore[child]
        (yield treerow)
