class_docstr: Writer to produce MITIFF image files.
code: def _special_correction_of_proj_string(self, proj4_string):
      if "geos" in proj4_string:
          proj4_string = proj4_string.replace("+sweep=x ", "")
          if "+a=6378137.0 +b=6356752.31414" in proj4_string:
              proj4_string = proj4_string.replace(
                  "+a=6378137.0 +b=6356752.31414", "+ellps=WGS84"
              )
      if "+units=m" in proj4_string:
          proj4_string = proj4_string.replace("+units=m", "+units=km")
  
      if not any(
          datum in proj4_string for datum in ["datum", "towgs84"]
      ):
          proj4_string += " +towgs84=0,0,0"
  
      if "units" not in proj4_string:
          proj4_string += " +units=km"
      return proj4_string
  
imports: import logging
  import os
  import dask
  import numpy
  from PIL import Image, ImagePalette
  from satpy.dataset import DataID, DataQuery
  from satpy.writers import ImageWriter, get_enhanced_image
label_desc: Use image node_id 10 for calling the MITIFFWriter obj's underlying member method code with example usage: obj._special_correction_of_proj_string(proj4_string) and returns: proj4_string