code: def test_concat_empty_series_dtypes(self, left, right, expected):
      # GH#39817, GH#45101
      result = concat([Series(dtype=left), Series(dtype=right)])
      assert result.dtype == expected
  
imports: import numpy
  import pytest
  import pandas
  from pandas import DataFrame, RangeIndex, Series, concat, date_range
  import pandas._testing
label_desc: Use image node_id 4 for calling the TestEmptyConcat obj's underlying member method code with example usage: obj.test_concat_empty_series_dtypes(left, right, expected) without return types