code: def test_VecReg_inputs():
      input_map = dict(
          affine_mat=dict(
              argstr="-t %s",
              extensions=None,
          ),
          args=dict(
              argstr="%s",
          ),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          in_file=dict(
              argstr="-i %s",
              extensions=None,
              mandatory=True,
          ),
          interpolation=dict(
              argstr="--interp=%s",
          ),
          mask=dict(
              argstr="-m %s",
              extensions=None,
          ),
          out_file=dict(
              argstr="-o %s",
              extensions=None,
              genfile=True,
              hash_files=False,
          ),
          output_type=dict(),
          ref_mask=dict(
              argstr="--refmask=%s",
              extensions=None,
          ),
          ref_vol=dict(
              argstr="-r %s",
              extensions=None,
              mandatory=True,
          ),
          rotation_mat=dict(
              argstr="--rotmat=%s",
              extensions=None,
          ),
          rotation_warp=dict(
              argstr="--rotwarp=%s",
              extensions=None,
          ),
          warp_field=dict(
              argstr="-w %s",
              extensions=None,
          ),
      )
      inputs = VecReg.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_VecReg_inputs() without return types