code: def test_scalar_agg_varargs(varargs_agg_func_fixture):
      arr1 = pa.array([10, 20, 30, 40, 50], pa.int64())
      arr2 = pa.array([1.0, 2.0, 3.0, 4.0, 5.0], pa.float64())
  
      result = pc.call_function("sum_mean", [arr1, arr2])
      expected = pa.scalar(33.0)
      assert result == expected
  
imports: import pytest
  import numpy
  import pyarrow
  from pyarrow import compute
label_desc: Use image node_id 50 for calling a global function with example usage: test_scalar_agg_varargs(varargs_agg_func_fixture) without return types