code: def test_log1p_expr():
      expr = ast.Log1pExpr(ast.NumVal(2.0))
  
      expected_code = """
  public class Model {
      public static double score(double[] input) {
          return Math.log1p(2.0);
      }
  }
  """
  
      interpreter = JavaInterpreter()
      assert_code_equal(interpreter.interpret(expr), expected_code)
  
imports: from itertools import product
  import pytest
  from m2cgen import ast
  from m2cgen.interpreters import JavaInterpreter
  from tests.utils import assert_code_equal
label_desc: Use image node_id 23 for calling a global function with example usage: test_log1p_expr() without return types