code: def test_ExtractSkeleton_inputs():
      input_map = dict(
          InputImageFileName=dict(
              argstr="%s",
              extensions=None,
              position=-2,
          ),
          OutputImageFileName=dict(
              argstr="%s",
              hash_files=False,
              position=-1,
          ),
          args=dict(
              argstr="%s",
          ),
          dontPrune=dict(
              argstr="--dontPrune ",
          ),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          numPoints=dict(
              argstr="--numPoints %d",
          ),
          pointsFile=dict(
              argstr="--pointsFile %s",
          ),
          type=dict(
              argstr="--type %s",
          ),
      )
      inputs = ExtractSkeleton.input_spec()
  
      for key, metadata in list(input_map.items()):
          for metakey, value in list(metadata.items()):
              assert getattr(inputs.traits()[key], metakey) == value
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_ExtractSkeleton_inputs() without return types