Bug 31374 Package Explorer does not show children of linked directories
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/StandardJavaElementContentProvider.java
* provider always returns original elements.
	 */
	public void setProvideWorkingCopy(boolean b) {
		fProvideWorkingCopy= b;
	}
	/* (non-Javadoc)
	 * @see IWorkingCopyProvider#providesWorkingCopies()
	 */
	public boolean providesWorkingCopies() {
		return fProvideWorkingCopy;
	}
	/* (non-Javadoc)
	 * Method declared on IStructuredContentProvider.
	 */
	public Object[] getElements(Object parent) {
		return getChildren(parent);
	}
	
	/* (non-Javadoc)
	 * Method declared on IContentProvider.
	 */
	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
	}
	/* (non-Javadoc)
	 * Method declared on IContentProvider.
	 */
	public void dispose() {
	}
	/* (non-Javadoc)
	 * Method declared on ITreeContentProvider.