class_docstr: Test VISSR file handler.
class_docstr_tok: ["Test","VISSR","file","handler","."]
docstr: Get navigation parameters.
docstr_tok: ["Get","navigation","parameters","."]
code: def nav_params(
      self,
      coordinate_conversion,
      attitude_prediction,
      orbit_prediction,
  ):
      """Get navigation parameters."""
      nav_params = {}
      nav_params.update(attitude_prediction)
      nav_params.update(orbit_prediction)
      nav_params.update(coordinate_conversion)
      return nav_params
  
imports: import datetime
  import gzip
  import fsspec
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition
  import satpy.tests.reader_tests.gms.test_gms5_vissr_data
  from satpy.readers import FSFile
  from satpy.tests.reader_tests.utils import get_jit_methods, skip_numba_unstable_if_missing
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 10 for calling the TestFileHandler obj's underlying member method code with example usage: obj.nav_params(coordinate_conversion, attitude_prediction, orbit_prediction) and returns: nav_params