Bug 209106 BIRT - User properties defined in a library are not seen in properties view
In the attached library there is a grid container. The text control and the row of the table in the grid have two user properties each. We can see them in the library but not when we drag them in to a design. The property does not show up in the properties view
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
* User-defined elements can extend other elements, but style element is not
 * allowed to extend each other. The following is the terminology used for this
 * system.
 * <ul>
 * <li>If element E extends element D, then D is said to be the
 * <em>parent </em> element, and element E is the <em>derived </em> element.
 * </li>
 * <li>We can also use the term <em>base </em> as a synonym for parent. That
 * is, D is the base element above.</li>
 * <li>Element D may in turn extend another element C.</li>
 * <li>We say that C and D are <em>ancestor </em> elements of E, and that D
 * and E are <em>descendents </em> of C.</li>
 * <li>In this simple hierarchy, element E is the <em>most derived </em>
 * element, while element C is the <em>most base </em> element.</li>
 * </ul>
 * <p>
 * Inheritance applies to the following:
 * <p>
 * <dl>
 * <dt><strong>Property values </strong></dt>
 * <dd>An element inherits any property values defined by any of its ancestors.
 * If two ancestors define values for the same property, then the inherited
 * value is that defined by the most derived ancestor. This rule is similar to
 * the method overriding rules in Java.</dd>
 * 
 * <dt><strong>Named style </strong></dt>
 * <dd>If an ancestor element explicitly names a style, then the derived
 * element will also use that style (unless the derived element specifies a
 * different style.)</dd>
 *