code: def test_SVReg_inputs():
      input_map = dict(
          args=dict(
              argstr="%s",
          ),
          atlasFilePrefix=dict(
              argstr="'%s'",
              position=1,
          ),
          curveMatchingInstructions=dict(
              argstr="'-cur %s'",
          ),
          dataSinkDelay=dict(
              argstr="%s",
          ),
          displayModuleName=dict(
              argstr="'-m'",
          ),
          displayTimestamps=dict(
              argstr="'-t'",
          ),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          iterations=dict(
              argstr="'-H %d'",
          ),
          keepIntermediates=dict(
              argstr="'-k'",
          ),
          pialSurfaceMaskDilation=dict(
              argstr="'-D %d'",
          ),
          refineOutputs=dict(
              argstr="'-r'",
          ),
          shortMessages=dict(
              argstr="'-gui'",
          ),
          skipToIntensityReg=dict(
              argstr="'-p'",
          ),
          skipToVolumeReg=dict(
              argstr="'-s'",
          ),
          skipVolumetricProcessing=dict(
              argstr="'-S'",
          ),
          subjectFilePrefix=dict(
              argstr="'%s'",
              mandatory=True,
              position=0,
          ),
          useCerebrumMask=dict(
              argstr="'-C'",
          ),
          useManualMaskFile=dict(
              argstr="'-cbm'",
          ),
          useMultiThreading=dict(
              argstr="'-P'",
          ),
          useSingleThreading=dict(
              argstr="'-U'",
          ),
          verbosity0=dict(
              argstr="'-v0'",
              xor=("verbosity0", "verbosity1", "verbosity2"),
          ),
          verbosity1=dict(
              argstr="'-v1'",
              xor=("verbosity0", "verbosity1", "verbosity2"),
          ),
          verbosity2=dict(
              argstr="'v2'",
              xor=("verbosity0", "verbosity1", "verbosity2"),
          ),
      )
      inputs = SVReg.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_SVReg_inputs() without return types