text: #!/pxrpythonsubst
  #
  # Copyright 2018 Pixar
  #
  # Licensed under the Apache License, Version 2.0 (the "Apache License")
  # with the following modification; you may not use this file except in
  # compliance with the Apache License and the following modification to it:
  # Section 6. Trademarks. is deleted and replaced with:
  #
  # 6. Trademarks. This License does not grant permission to use the trade
  #    names, trademarks, service marks, or product names of the Licensor
  #    and its affiliates, except as required to comply with Section 4(c) of
  #    the License and to reproduce the content of the NOTICE file.
  #
  # You may obtain a copy of the Apache License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the Apache License with the above modification is
  # distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied. See the Apache License for the specific
  # language governing permissions and limitations under the Apache License.
  from pxr import Usd, UsdSkel, UsdGeom
  import unittest
  
  
  class TestUsdSkelRoot(unittest.TestCase):
  
      def test_ComputeExtentPlugin(self):
          """Tests plugin for computing extents on a UsdSkelRoot."""
  
          testFile = "root.usda"
          stage = Usd.Stage.Open(testFile)
  
          boundable = UsdGeom.Boundable(stage.GetPrimAtPath("/Root"))
  
          for time in xrange(int(stage.GetStartTimeCode()),
                             int(stage.GetEndTimeCode())+1):
              UsdGeom.Boundable.ComputeExtentFromPlugins(boundable, time)
  
          stage.GetRootLayer().Export("root.computedExtents.usda")
  
  
  if __name__ == "__main__":
      unittest.main()
  