@Override
  public @NotNull ContentImpl createContent(JComponent component, @Nullable @NlsContexts.TabTitle String displayName, boolean isLockable) {
    return new ContentImpl(component, displayName, isLockable);
  }
@Override
  public @NotNull ContentImpl createContent(JComponent component, @Nullable @NlsContexts.TabTitle String displayName, boolean isLockable)