How to use

asWidgetOrNull

method

in

com.google.gwt.user.client.ui.TabPanel

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void add(IsWidget w, IsWidget tabWidget) {
 add(asWidgetOrNull(w), asWidgetOrNull(tabWidget));
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, IsWidget tabWidget, int beforeIndex) {
 insert(asWidgetOrNull(widget), asWidgetOrNull(tabWidget), beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, String tabText, int beforeIndex) {
 insert(asWidgetOrNull(widget), tabText, beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void add(IsWidget w, String tabText) {
 add(asWidgetOrNull(w), tabText);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
@Override
public int getWidgetIndex(IsWidget child) {
 return getWidgetIndex(asWidgetOrNull(child));
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void add(IsWidget w, @IsSafeHtml String tabText, boolean asHTML) {
 add(asWidgetOrNull(w), tabText, asHTML);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, @IsSafeHtml String tabText, boolean asHTML, int beforeIndex) {
 insert(asWidgetOrNull(widget), tabText, asHTML, beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, IsWidget tabWidget, int beforeIndex) {
 insert(asWidgetOrNull(widget), asWidgetOrNull(tabWidget), beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void add(IsWidget w, IsWidget tabWidget) {
 add(asWidgetOrNull(w), asWidgetOrNull(tabWidget));
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, IsWidget tabWidget, int beforeIndex) {
 insert(asWidgetOrNull(widget), asWidgetOrNull(tabWidget), beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void add(IsWidget w, IsWidget tabWidget) {
 add(asWidgetOrNull(w), asWidgetOrNull(tabWidget));
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, String tabText, boolean asHTML,
  int beforeIndex) {
 insert(asWidgetOrNull(widget), tabText, asHTML, beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, String tabText, boolean asHTML,
  int beforeIndex) {
 insert(asWidgetOrNull(widget), tabText, asHTML, beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void add(IsWidget w, String tabText) {
 add(asWidgetOrNull(w), tabText);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void add(IsWidget w, String tabText, boolean asHTML) {
 add(asWidgetOrNull(w), tabText, asHTML);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, String tabText, int beforeIndex) {
 insert(asWidgetOrNull(widget), tabText, beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void add(IsWidget w, String tabText, boolean asHTML) {
 add(asWidgetOrNull(w), tabText, asHTML);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
@Override
public int getWidgetIndex(IsWidget child) {
 return getWidgetIndex(asWidgetOrNull(child));
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
public void insert(IsWidget widget, String tabText, int beforeIndex) {
 insert(asWidgetOrNull(widget), tabText, beforeIndex);
}

/**
 * Convenience overload to allow {@link IsWidget} to be used directly.
 */
@Override
public int getWidgetIndex(IsWidget child) {
 return getWidgetIndex(asWidgetOrNull(child));
}