def save(cloud, path, format=None, binary=False):
    format = _infer_format(path, format)
    try:
        dumper = getattr(cloud, "_to_%s_file" % format)
    except AttributeError:
        raise ValueError("unknown file format %s" % format)
    if dumper(_encode(path), binary):
        raise IOError("error while saving pointcloud to %r (format=%r)"
                      % (path, format))
See L{twisted.internet.interfaces.IReactorThreads.suggestThreadPoolSize}.
dataset/ETHPy150Open strawlab/python-pcl/pcl/__init__.py/save--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/internet/base.py/ReactorBase.suggestThreadPoolSize