code: def test_stanc_no_warning() -> None:
      """No warnings."""
      program_code = "parameters {real y;} model {y ~ normal(0,1);}"
      buffer = io.StringIO()
      with contextlib.redirect_stderr(buffer):
          stan.build(program_code=program_code)
      assert "warning" not in buffer.getvalue().lower()
  
imports: import contextlib
  import io
  import stan
label_desc: Use image node_id 1 for calling a global function with example usage: test_stanc_no_warning() without return types