@importer('<STR_LIT>', ('<STR_LIT>',         '<STR_LIT>',<EOL>'<STR_LIT>',  '<STR_LIT>',<EOL>'<STR_LIT>', '<STR_LIT>',<EOL>'<STR_LIT>', '<STR_LIT>',))<EOL>def load_path_trace(filename, **kw):
return PathTrace.load(filename, **kw)<EOL>
load_path_trace(filename) yields the path trace indicated by the given file name or stream
  object, filename. The file or stream must be encoded in json.