Bug 176450 Support link to CSS Feature(Model Part)
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/DesignWriter.java
if ( thumbnail != null )
			{
				byte[] data = base.encode( design.getThumbnail( ) );
				String value = new String( data, OdaDesignerState.CHARSET );
				if ( value.length( ) < IndentableXMLWriter.MAX_CHARS_PER_LINE )
					writeEntry( DesignSchemaConstants.PROPERTY_TAG,
							IReportDesignModel.THUMBNAIL_PROP, value, false );
				else
					writeLongIndentText( DesignSchemaConstants.PROPERTY_TAG,
							IReportDesignModel.THUMBNAIL_PROP, value );
			}
		}
		catch ( UnsupportedEncodingException e )
		{
			assert false;
		}
		
		writeEmbeddedImages( obj );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.writer.ModuleWriter#getModule()
	 */
	protected Module getModule( )
	{
		return design;
	}
}