code: def test_Label2Label_inputs():
      input_map = dict(
          args=dict(
              argstr="%s",
          ),
          copy_inputs=dict(),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          hemisphere=dict(
              argstr="--hemi %s",
              mandatory=True,
          ),
          out_file=dict(
              argstr="--trglabel %s",
              extensions=None,
              hash_files=False,
              keep_extension=True,
              name_source=["source_label"],
              name_template="%s_converted",
          ),
          registration_method=dict(
              argstr="--regmethod %s",
              usedefault=True,
          ),
          source_label=dict(
              argstr="--srclabel %s",
              extensions=None,
              mandatory=True,
          ),
          source_sphere_reg=dict(
              extensions=None,
              mandatory=True,
          ),
          source_subject=dict(
              argstr="--srcsubject %s",
              mandatory=True,
          ),
          source_white=dict(
              extensions=None,
              mandatory=True,
          ),
          sphere_reg=dict(
              extensions=None,
              mandatory=True,
          ),
          subject_id=dict(
              argstr="--trgsubject %s",
              mandatory=True,
              usedefault=True,
          ),
          subjects_dir=dict(),
          white=dict(
              extensions=None,
              mandatory=True,
          ),
      )
      inputs = Label2Label.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_Label2Label_inputs() without return types