code: def test_sign_parsing(prec_pair):
      """Test that convert_precions_string determines the signedness correctly"""
      strprec = prec_pair[0]
      signed = prec_pair[1]
  
      evalprec = hls4ml.backends.fpga.fpga_backend.FPGABackend.convert_precision_string(
          strprec
      )
      assert evalprec.signed == signed
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_sign_parsing(prec_pair) without return types