code: def test_Label2Vol_inputs():
      input_map = dict(
          annot_file=dict(
              argstr="--annot %s",
              copyfile=False,
              extensions=None,
              mandatory=True,
              requires=("subject_id", "hemi"),
              xor=(
                  "label_file",
                  "annot_file",
                  "seg_file",
                  "aparc_aseg",
              ),
          ),
          aparc_aseg=dict(
              argstr="--aparc+aseg",
              mandatory=True,
              xor=(
                  "label_file",
                  "annot_file",
                  "seg_file",
                  "aparc_aseg",
              ),
          ),
          args=dict(
              argstr="%s",
          ),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          fill_thresh=dict(
              argstr="--fillthresh %g",
          ),
          hemi=dict(
              argstr="--hemi %s",
          ),
          identity=dict(
              argstr="--identity",
              xor=("reg_file", "reg_header", "identity"),
          ),
          invert_mtx=dict(
              argstr="--invertmtx",
          ),
          label_file=dict(
              argstr="--label %s...",
              copyfile=False,
              mandatory=True,
              xor=(
                  "label_file",
                  "annot_file",
                  "seg_file",
                  "aparc_aseg",
              ),
          ),
          label_hit_file=dict(
              argstr="--hits %s",
              extensions=None,
          ),
          label_voxel_volume=dict(
              argstr="--labvoxvol %f",
          ),
          map_label_stat=dict(
              argstr="--label-stat %s",
              extensions=None,
          ),
          native_vox2ras=dict(
              argstr="--native-vox2ras",
          ),
          proj=dict(
              argstr="--proj %s %f %f %f",
              requires=("subject_id", "hemi"),
          ),
          reg_file=dict(
              argstr="--reg %s",
              extensions=None,
              xor=("reg_file", "reg_header", "identity"),
          ),
          reg_header=dict(
              argstr="--regheader %s",
              extensions=None,
              xor=("reg_file", "reg_header", "identity"),
          ),
          seg_file=dict(
              argstr="--seg %s",
              copyfile=False,
              extensions=None,
              mandatory=True,
              xor=(
                  "label_file",
                  "annot_file",
                  "seg_file",
                  "aparc_aseg",
              ),
          ),
          subject_id=dict(
              argstr="--subject %s",
          ),
          subjects_dir=dict(),
          surface=dict(
              argstr="--surf %s",
          ),
          template_file=dict(
              argstr="--temp %s",
              extensions=None,
              mandatory=True,
          ),
          vol_label_file=dict(
              argstr="--o %s",
              extensions=None,
              genfile=True,
          ),
      )
      inputs = Label2Vol.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_Label2Vol_inputs() without return types