Bug 136241 [regression]Preview template in web viewer and pdf didn't get correct effect.
Description: Preview template items in web viewer and pdf didn't get correct effect. Steps to reproduce: 1. Create template items. 2. Preview in Web Viewer and pdf. Expected result: Same effect as in html. Actual result: In web viewer, see only blank box. In pdf, blank page.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
}
	/**
	 * Gets the UTF signature of this module file.
	 * 
	 * @return the UTF signature of the module file.
	 */
	public String getUTFSignature( )
	{
		return signature;
	}
	/**
	 * Returns the number of slots of the module. For the library and the report
	 * design, this number is different.
	 * 
	 * @return the number of slots of the module
	 */
	protected abstract int getSlotCount( );
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.DesignElement#getSlot(int)
	 */
	public ContainerSlot getSlot( int slot )
	{
		assert slot >= 0 && slot < getSlotCount( );
		return slots[slot];
	}
	/**
	 * Privates method to create the slots.
	 */