@Override
              public Object getValueAt(int column) {
                return switch (column) {
                  case 0 -> myNameEditor.getText().trim();
                  case 1 -> new Pair<>(item.defaultValueCodeFragment,
                                       ((PyParameterTableModelItem)item).isDefaultInSignature());
                  default -> null;
                };
              }
@Override
              public Object getValueAt(int column)