Bug 175791 An unnecessary (?) warning occurs at session creation
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/StructPropertyType.java
}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.design.metadata.PropertyType#getXmlName()
	 */
	public String getName( )
	{
		return STRUCT_TYPE_NAME;
	}
	/**
	 * Can not store objects of this list property type directly. Call to this
	 * method will always throw an exception.
	 * 
	 */
	public Object validateValue( Module module, PropertyDefn defn, Object value )
			throws PropertyValueException
	{
		if ( value == null )
		{
			logger.log( Level.WARNING, "The value of the structure is null" ); 
			return null;
		}
		
		if ( defn.isList( ) )
		{
			if ( value instanceof List )
			{
				if ( ( (List) value ).isEmpty( ) )
				{