Bug 155509 ModuleHandle findResource method does not support .properties files
There is no fileType for .properties files in IResourceLocator
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* @return the default units for the design.
	 * @see org.eclipse.birt.report.model.api.metadata.DimensionValue
	 */
	public String getDefaultUnits( )
	{
		return module.getUnits( );
	}
	/**
	 * Sets the default units for the design. These are the units that are used
	 * for dimensions that don't explicitly specify units.
	 * <p>
	 * 
	 * For a report design, it allows the following constants that defined in
	 * <code>{@link org.eclipse.birt.report.model.api.elements.DesignChoiceConstants}</code>:
	 * <ul>
	 * <li><code>UNITS_IN</code></li>
	 * <li><code>UNITS_CM</code></li>
	 * <li><code>UNITS_MM</code></li>
	 * <li><code>UNITS_PT</code></li>
	 * </ul>
	 * 
	 * @param units
	 *            the default units for the design.
	 * @throws SemanticException
	 *             if the input unit is not one of allowed.
	 * 
	 * @see org.eclipse.birt.report.model.api.metadata.DimensionValue
	 */
	public void setDefaultUnits( String units ) throws SemanticException
	{