Writes to the given stream the ASCII representation of the dependency tree.

def show_dependencies(self, stream=sys.stdout):
        """Writes to the given stream the ASCII representation of the dependency tree."""
        def child_iter(node):
            return [d.node for d in node.deps]

        def text_str(node):
            return colored(str(node), color=node.status.color_opts["color"])

        for task in self.iflat_tasks():
            print(draw_tree(task, child_iter, text_str), file=stream)