code: def test_pow_expr():
      expr = ast.PowExpr(ast.NumVal(2.0), ast.NumVal(3.0))
  
      expected_code = """
  import "math"
  func score(input []float64) float64 {
      return math.Pow(2.0, 3.0)
  }
  """
  
      interpreter = GoInterpreter()
      assert_code_equal(interpreter.interpret(expr), expected_code)
  
imports: from itertools import product
  import pytest
  from m2cgen import ast
  from m2cgen.interpreters import GoInterpreter
  from tests.utils import assert_code_equal
label_desc: Use image node_id 12 for calling a global function with example usage: test_pow_expr() without return types