private List<String[]> getCustomOutputsPropertyValue(final Properties properties) {
		List<String[]> customOutputs = new ArrayList<>();
		String values = this.getPropertyValue(properties, CUSTOM_OUTPUTS_TAG, null);
		if (values == null) {
			return null;
		}
		String [] outputs = values.split(OUTPUT_SEPARATOR);
		for (String value: outputs) {
			customOutputs.add(value.split(PARAM_SEPARATOR));
		}
		return customOutputs;
	}