private static String createExecutionEnvironment(HardwareAlternative platformAlternative, String hardwareSetId, DeploymentAlternative deploymentAlternative) {
		String executionEnvironment = "\t\t<nestedNode xmi:type=\"uml:ExecutionEnvironment\" xmi:id=\"" + platformAlternative.getId() + "\" name=\"" + platformAlternative.getName() + "\">\n";
		for (DeployedComponent deployedComponent : deploymentAlternative.getDeployedComponents())
			if (deployedComponent.getHardwareSet().getId().equals(hardwareSetId))
				executionEnvironment += createArtifact(deployedComponent.getComponent());
		executionEnvironment += "\t\t</nestedNode>\n";
		return executionEnvironment;
	}