public @NlsContexts.Label @NotNull String getDisplayName() {
    return message(switch (this) {
      case external -> "label.nested.copy.type.external";
      case switched -> "label.nested.copy.type.switched";
      case inner -> "label.nested.copy.type.inner";
    });
  }
public @NlsContexts.Label @NotNull String getDisplayName()