Bug 203026 Can not export chart to doc.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
}
			return result;
		}
		return null;
	}
	/**
	 * Gets the mime-type of the given emitter format.
	 * 
	 * @param format
	 * @return mime-type of the extended emitter format
	 */
	public String getMIMEType( String format )
	{
		return engine.getMIMEType( format );
	}
	/**
	 * Returns the engine config
	 */
	public EngineConfig getEngineConfig( )
	{
		return config;
	}
	/**
	 * Shutdown ReportEngineService, set instance as null
	 */
	public static void shutdown( )
	{
		instance = null;
	}
}