def loadGeometry(self, file=None):
import os
if file is None:
install_dir = os.environ['DD4hepINSTALL']
level = DDG4.printLevel()
DDG4.setPrintLevel(DDG4.OutputLevel.WARNING)
self.kernel.loadGeometry(str("file:" + install_dir + "/DDDetectors/compact/SiD.xml"))
DDG4.setPrintLevel(level)
else:
ui = DDG4.DD4hepUI(self.description)
ui.importROOT(file)
return self
