def read(cls, path):
"""
"""
if path.endswith(".gz"):
f = gzip.open(path, "rb")
else:
f = open(path, "r")
read_data = json.load(f)
header = read_data["header"]
version = header["version"]
data = read_data["data"]
graph_data = data["graph"]
graph_io_class = NodeGraphIOVersionRegistry.get(version)
graph_io = graph_io_class()
graph = graph_io.import_graph(graph_data)
return graph
