class_docstr: Swap-in NetCDF4 File Handler.
class_docstr_tok: ["Swap-in","NetCDF4","File","Handler","."]
docstr: Fill file contents with default data.
docstr_tok: ["Fill","file","contents","with","default","data","."]
code: def _fill_contents_with_default_data(self, file_content, file_type):
      """Fill file contents with default data."""
      if file_type.startswith("vgeo"):
          file_content["/attr/OrbitNumber"] = file_content.pop(
              "/attr/orbit_number"
          )
          file_content["geolocation_data/latitude"] = DEFAULT_LAT_DATA
          file_content["geolocation_data/longitude"] = DEFAULT_LON_DATA
          file_content[
              "geolocation_data/solar_zenith"
          ] = DEFAULT_LON_DATA
          file_content[
              "geolocation_data/solar_azimuth"
          ] = DEFAULT_LON_DATA
          file_content[
              "geolocation_data/sensor_zenith"
          ] = DEFAULT_LON_DATA
          file_content[
              "geolocation_data/sensor_azimuth"
          ] = DEFAULT_LON_DATA
          if file_type.endswith("d"):
              file_content[
                  "geolocation_data/lunar_zenith"
              ] = DEFAULT_LON_DATA
              file_content[
                  "geolocation_data/lunar_azimuth"
              ] = DEFAULT_LON_DATA
      elif file_type == "vl1bm":
          for m_band in self.M_BANDS:
              file_content[
                  f"observation_data/{m_band}"
              ] = DEFAULT_FILE_DATA
      elif file_type == "vl1bi":
          for i_band in self.I_BANDS:
              file_content[
                  f"observation_data/{i_band}"
              ] = DEFAULT_FILE_DATA
      elif file_type == "vl1bd":
          file_content[
              "observation_data/DNB_observations"
          ] = DEFAULT_FILE_DATA
          file_content[
              "observation_data/DNB_observations/attr/units"
          ] = "Watts/cm^2/steradian"
  
imports: import os
  from datetime import datetime, timedelta
  from unittest import mock
  import numpy
  from satpy.tests.reader_tests.test_netcdf_utils import FakeNetCDF4FileHandler
  from satpy.tests.utils import convert_file_content_to_data_array
label_desc: Use image node_id 2 for calling the FakeNetCDF4FileHandlerDay obj's underlying member method code with example usage: obj._fill_contents_with_default_data(file_content, file_type) without return types