Bug 92851 [Viewers] [api] protected field StructuredViewer.colorAndFontCollector
3.1 HEAD colorAndFontCollector protected ColorAndFontCollector colorAndFontCollector This read-write field was added as API in the 3.1 cycle. Exposing fields as API (other than public static final ones) is bad practice because a client can change the field and there's nothing the class can do to prevent or even track that change. All access to read-write field should be through accessor methods, including access from subclasses. Also, this field is missing an @since 3.1 tag.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableTreeViewer.java
/**
     * The table tree viewer implementation of this <code>Viewer</code> framework
     * method returns the label provider, which in the case of table tree
     * viewers will be an instance of either <code>ITableLabelProvider</code>
     * or <code>ILabelProvider</code>.
     * If it is an <code>ITableLabelProvider</code>, then it provides a
     * separate label text and image for each column. If it is an 
     * <code>ILabelProvider</code>, then it provides only the label text 
     * and image for the first column, and any remaining columns are blank.
     */
    public IBaseLabelProvider getLabelProvider() {
        return super.getLabelProvider();
    }
    /* (non-Javadoc)
     * Method declared on AbstractTreeViewer.
     */
    protected Item getParentItem(Item item) {
        return ((TableTreeItem) item).getParentItem();
    }
    /* (non-Javadoc)
     * Method declared on AbstractTreeViewer.
     */
    protected Item[] getSelection(Control widget) {
        return ((TableTree) widget).getSelection();
    }
    /**
     * Returns this table tree viewer's table tree control.
     *
     * @return the table tree control
     */