code: def test_VolumeMask_inputs():
      input_map = dict(
          args=dict(
              argstr="%s",
          ),
          aseg=dict(
              extensions=None,
              xor=["in_aseg"],
          ),
          copy_inputs=dict(),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          in_aseg=dict(
              argstr="--aseg_name %s",
              extensions=None,
              xor=["aseg"],
          ),
          left_ribbonlabel=dict(
              argstr="--label_left_ribbon %d",
              mandatory=True,
          ),
          left_whitelabel=dict(
              argstr="--label_left_white %d",
              mandatory=True,
          ),
          lh_pial=dict(
              extensions=None,
              mandatory=True,
          ),
          lh_white=dict(
              extensions=None,
              mandatory=True,
          ),
          rh_pial=dict(
              extensions=None,
              mandatory=True,
          ),
          rh_white=dict(
              extensions=None,
              mandatory=True,
          ),
          right_ribbonlabel=dict(
              argstr="--label_right_ribbon %d",
              mandatory=True,
          ),
          right_whitelabel=dict(
              argstr="--label_right_white %d",
              mandatory=True,
          ),
          save_ribbon=dict(
              argstr="--save_ribbon",
          ),
          subject_id=dict(
              argstr="%s",
              mandatory=True,
              position=-1,
              usedefault=True,
          ),
          subjects_dir=dict(),
      )
      inputs = VolumeMask.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_VolumeMask_inputs() without return types