code: def _label_surface_area(label_image, label, spacing):
      verts, faces, _normals, _values = skimage.measure.marching_cubes(
          label_image == label,
          spacing=spacing,
          level=0,
          method="lorensen",
      )
  
      return skimage.measure.mesh_surface_area(verts, faces)
  
imports: import numpy
  import skimage.measure
  from cellprofiler_core.constants.measurement import COLTYPE_FLOAT
  from cellprofiler_core.module import Module
  from cellprofiler_core.setting import Divider, ValidationError
  from cellprofiler_core.setting.choice import Choice
  from cellprofiler_core.setting.subscriber import ImageListSubscriber, LabelListSubscriber
label_desc: Use image node_id 2 for calling a global function with example usage: _label_surface_area(label_image, label, spacing) and returns: skimage