Bug 167511 [Block]NPE when using customized IStyleProcessor with Chart Generator and no Chart will be rendered
Use a customized IStyleProcessor with Generator.build() and the chart will not be rendered in UI.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/factory/Generator.java
{
	/**
	 * Internally used.
	 */
	private static final int UNDEFINED = IConstants.UNDEFINED;
	/**
	 * Internally used.
	 */
	static final int WITH_AXES = 1;
	/**
	 * Internally used to maintain type information.
	 */