Bug 119566 Support template items in page header/footer
Currently you can't create template report items inside a page header/footer. This should be fixed.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
{
		Object value = getProperty( module, prop );
		if ( value == null )
			return null;
		return prop.getDisplayValue( module, value );
	}
	/**
	 * Sets an unresolved extends name. The resolved relationships is not
	 * cached; it must be resolved later.
	 * 
	 * @param name
	 *            the name of the new parent element, or null if this element
	 *            does not extend any other element
	 */
	public void setExtendsName( String name )
	{
		setExtendsElement( null );
		name = StringUtil.trimString( name );
		if ( name == null )
			return;
		String namespace = StringUtil.extractNamespace( name );
		name = StringUtil.extractName( name );
		extendsRef = new ElementRefValue( namespace, name );
	}
	/**
	 * Validates this element and its contents.
	 * 
	 * @param module
	 *            the module
	 * @return the list of the errors found in validation, each of which is the