> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aseeflow.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Delegation Code

If you use [Delegation Code](/user-guide/process-engine/delegation-code), you can access the CMMN model instance and current element of the executed case. If a CMMN model is accessed, it will be cached to avoid redundant database queries.

## Case Execution Listener

If your class implements the `org.camunda.bpm.engine.delegate.CaseExecutionListener` interface, you can access the CMMN model instance
and the plan item element. As a Case Execution Listener can be added to several elements like case plan model, human task, etc., it can
not be guaranteed which type the flow element will be.

```java theme={null}
public class ExampleCaseExecutionListener implements CaseExecutionListener {

  public void notify(DelegateCaseExecution caseExecution) throws Exception {
    CmmnModelInstance modelInstance = execution.getCmmnModelInstance();
    CmmnElement cmmnElement = execution.getCmmnModelElementInstance();
  }
}
```