Bug 221768 [Viewers] Fix for bug 210747 causes NPE when parent is TreePath.EMPTY
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
}
		return result;
	}
	/*
	 * (non-Javadoc)
	 *
	 * @see org.eclipse.jface.viewers.StructuredViewer#getFilteredChildren(java.lang.Object)
	 */
	protected Object[] getFilteredChildren(Object parentElementOrTreePath) {
		Object[] result = getRawChildren(parentElementOrTreePath);
		ViewerFilter[] filters = getFilters();
		for (int i = 0; i < filters.length; i++) {
			ViewerFilter filter = filters[i];
			result = filter.filter(this, parentElementOrTreePath, result);
		}
		return result;
	}
	/**
	 * Adds the given child element to this viewer as a child of the given
	 * parent element. If this viewer does not have a sorter, the element is
	 * added at the end of the parent's list of children; otherwise, the element
	 * is inserted at the appropriate position.
	 * <p>
	 * This method should be called (by the content provider) when a single
	 * element has been added to the model, in order to cause the viewer to
	 * accurately reflect the model. This method only affects the viewer, not
	 * the model. Note that there is another method for efficiently processing
	 * the simultaneous addition of multiple elements.
	 * </p>
	 *