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    @Override
    public void deploy(CompositionElementDto compositionElement, InstanceElementDto instanceElement) throws PfModelException {

        var state = instanceElement.outProperties().get("state");
        if ("DEPLOYED".equals(state)) {
            // clean up deployment
        
        } else if ("DEPLOYING".equals(state) || "UNDEPLOYING".equals(state)) {
            // check and clean up

        }

        // deployment process
        instanceElement.outProperties().put("state", "DEPLOYING");
        intermediaryApi.sendAcElementInfo(instanceElement.instanceId(), instanceElement.elementId(), null, null, instanceElement.outProperties()); 
        
        .......................................
        .......................................
        .......................................
        // end of the deployment process        
        
         if (isDeploySuccess()) {
            instanceElement.outProperties().put("state", "DEPLOYED");
            intermediaryApi.sendAcElementInfo(instanceElement.instanceId(), instanceElement.elementId(), null, null, instanceElement.outProperties());
 
            intermediaryApi.updateAutomationCompositionElementState(instanceElement.instanceId(), instanceElement.elementId(), DeployState.DEPLOYED, null, StateChangeResult.NO_ERROR, "Deployed");
        } else {
            instanceElement.outProperties().put("state", "UNDEPLOYED");
            intermediaryApi.sendAcElementInfo(instanceElement.instanceId(), instanceElement.elementId(), null, null, instanceElement.outProperties());
 
            intermediaryApi.updateAutomationCompositionElementState(instanceElement.instanceId(), instanceElement.elementId(), DeployState.UNDEPLOYED, null, StateChangeResult.FAILED, "Deploy failed!");
        } 
     }


    @Override
    public void undeploy(CompositionElementDto compositionElement, InstanceElementDto instanceElement) throws PfModelException {

         var state = instanceElement.outProperties().get("state");
        if ("UNDEPLOYED".equals(state)) {
            // clean up undeployment
        
        } else if ("DEPLOYING".equals(state) || "UNDEPLOYING".equals(state)) {
            // check and clean up

        }
 
        // undeployment process
 
        instanceElement.outProperties().put("state", "UNDEPLOYING");
        intermediaryApi.sendAcElementInfo(instanceElement.instanceId(), instanceElement.elementId(), null, null, instanceElement.outProperties()); 

        .......................................
        .......................................
        .......................................
        .......................................
        // end of the undeployment process        
        
         if (isUndeploySuccess()) {
            instanceElement.outProperties().put("state", "UNDEPLOYED");
            intermediaryApi.sendAcElementInfo(instanceElement.instanceId(), instanceElement.elementId(), null, null, instanceElement.outProperties());

            intermediaryApi.updateAutomationCompositionElementState(instanceElement.instanceId(), instanceElement.elementId(), DeployState.UNDEPLOYED, null, StateChangeResult.NO_ERROR, "Undeployed");
        } else {
            instanceElement.outProperties().put("state", "DEPLOYED");
            intermediaryApi.sendAcElementInfo(instanceElement.instanceId(), instanceElement.elementId(), null, null, instanceElement.outProperties());

            intermediaryApi.updateAutomationCompositionElementState(instanceElement.instanceId(), instanceElement.elementId(), DeployState.DEPLOYED, null, StateChangeResult.FAILED, "Undeploy failed!");
        }
    }