code: def test_RangePushC(self):
      cuda.nvtx.RangePushC("test:RangePushC", 0xFF000000)
      cuda.nvtx.RangePop()
  
imports: import unittest
  from cupy import cuda
label_desc: Use image node_id 4 for calling the TestNVTX obj's underlying member method code with example usage: obj.test_RangePushC() without return types