code: def test_AnalyzeHeader_inputs():
      input_map = dict(
          args=dict(
              argstr="%s",
          ),
          centre=dict(
              argstr="-centre %s",
              units="mm",
          ),
          data_dims=dict(
              argstr="-datadims %s",
              units="voxels",
          ),
          datatype=dict(
              argstr="-datatype %s",
              mandatory=True,
          ),
          description=dict(
              argstr="-description %s",
          ),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          greylevels=dict(
              argstr="-gl %s",
              units="NA",
          ),
          in_file=dict(
              argstr="< %s",
              extensions=None,
              mandatory=True,
              position=1,
          ),
          initfromheader=dict(
              argstr="-initfromheader %s",
              extensions=None,
              position=3,
          ),
          intelbyteorder=dict(
              argstr="-intelbyteorder",
          ),
          networkbyteorder=dict(
              argstr="-networkbyteorder",
          ),
          nimages=dict(
              argstr="-nimages %d",
              units="NA",
          ),
          offset=dict(
              argstr="-offset %d",
              units="NA",
          ),
          out_file=dict(
              argstr="> %s",
              extensions=None,
              genfile=True,
              position=-1,
          ),
          picoseed=dict(
              argstr="-picoseed %s",
              units="mm",
          ),
          printbigendian=dict(
              argstr="-printbigendian %s",
              extensions=None,
              position=3,
          ),
          printimagedims=dict(
              argstr="-printimagedims %s",
              extensions=None,
              position=3,
          ),
          printintelbyteorder=dict(
              argstr="-printintelbyteorder %s",
              extensions=None,
              position=3,
          ),
          printprogargs=dict(
              argstr="-printprogargs %s",
              extensions=None,
              position=3,
          ),
          readheader=dict(
              argstr="-readheader %s",
              extensions=None,
              position=3,
          ),
          scaleinter=dict(
              argstr="-scaleinter %d",
              units="NA",
          ),
          scaleslope=dict(
              argstr="-scaleslope %d",
              units="NA",
          ),
          scheme_file=dict(
              argstr="%s",
              extensions=None,
              position=2,
          ),
          voxel_dims=dict(
              argstr="-voxeldims %s",
              units="mm",
          ),
      )
      inputs = AnalyzeHeader.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_AnalyzeHeader_inputs() without return types