@ExposedMethod(type = MethodType.BINARY, doc = BuiltinDocs.list___iadd___doc) final synchronized PyObject list___iadd__(PyObject o) { PyType oType = o.getType(); if (oType == TYPE || oType == PyTuple.TYPE || this == o) { extend(fastSequence(o, "argument must be iterable")); return this; } PyObject it; try { it = o.__iter__(); } catch (PyException pye) { if (!pye.match(Py.TypeError)) { throw pye; } return null; } extend(it); return this; }