class_docstr: Handle a single SCMI NetCDF4 file.
class_docstr_tok: ["Handle","a","single","SCMI","NetCDF4","file","."]
docstr: Map CF projection name to PROJ.4 name.
docstr_tok: ["Map","CF","projection","name","to","PROJ.4","name","."]
code: def _get_proj4_name(self, projection):
      """Map CF projection name to PROJ.4 name."""
      gmap_name = projection.attrs["grid_mapping_name"]
      proj = {
          "geostationary": "geos",
          "lambert_conformal_conic": "lcc",
          "polar_stereographic": "stere",
          "mercator": "merc",
      }.get(gmap_name, gmap_name)
      return proj
  
imports: import logging
  import os
  from datetime import datetime
  import numpy
  import xarray
  from pyresample import geometry
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 8 for calling the SCMIFileHandler obj's underlying member method code with example usage: obj._get_proj4_name(projection) and returns: proj