code: def test_get_loc_float_index_nan_with_method(self, vals):
      # GH#39382
      idx = Index(vals)
      with pytest.raises(KeyError, match="nan"):
          idx.get_loc(np.nan)
  
imports: import numpy
  import pytest
  from pandas.errors import InvalidIndexError
  from pandas import NA, Index, RangeIndex, Series, Timestamp
  import pandas._testing
  from pandas.core.arrays import ArrowExtensionArray, FloatingArray
label_desc: Use image node_id 6 for calling the TestGetLoc obj's underlying member method code with example usage: obj.test_get_loc_float_index_nan_with_method(vals) without return types