class_docstr: Handle CMSAF CLAAS-2 files.
docstr: Get start time from file.
docstr_tok: ["Get","start","time","from","file","."]
code: def start_time(self):
      """Get start time from file."""
      # datetime module can't handle timezone identifier
      return datetime.datetime.fromisoformat(
          self["/attr/time_coverage_start"].rstrip("Z")
      )
  
file_path: satpy/satpy/readers/cmsaf_claas2.py
imports: import datetime
  from satpy.resample import get_area_def
  from .netcdf_utils import NetCDF4FileHandler
label_desc: Use image node_id 2 for calling the CLAAS2 obj's underlying member method code with example usage: obj.start_time() and returns: datetime