code: def test_to_table_converts_decimals():
      # Build DataFrame with one Decimal column
      df = pd.DataFrame(
          {
              "a": [1, 2, 3],
              "b": [Decimal("3.12"), Decimal("4.9"), Decimal("6")],
          }
      )
      assert df["b"].dtype.kind == "O"
  
      # Convert to pyarrow table
      pa_table = to_arrow_table(df)
  
      # Check that pyarrow type is float64 (not Decimal128)
      b_type = pa_table.column("b").type
      assert b_type == pa.float64()
  
file_path: vegafusion/python/vegafusion/tests/test_transformer.py
imports: import pandas
  import pyarrow
  from decimal import Decimal
  from vegafusion.transformer import to_arrow_table
label_desc: Use image node_id 2 for calling a global function with example usage: test_to_table_converts_decimals() without return types