Bug 190061 [Metadata] Update @since tags for new API
Patch to follow
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/CellEditor.java
if (isActivated()) {
            fireApplyEditorValue();
            deactivate();
        }
    }
    /**
     * Performs the copy action.
     * This default implementation does nothing.
     * <p>
     * Subclasses may override
     * </p>
     */
    public void performCopy() {
    }
    /**
     * Performs the cut action.
     * This default implementation does nothing.
     * <p>
     * Subclasses may override
     * </p>
     */
    public void performCut() {
    }
    /**
     * Performs the delete action.
     * This default implementation does nothing.
     * <p>
     * Subclasses may override
     * </p>
     */