We need to create validators for each status. The validator will check if transition from current state is allowed or not. All validators are injected into WorkflowExecutionValidator. private List<Validator> validators WorkflowExecutionValidator will pick up an appropriate validator from a list and check if transition is allowed. Validators are implemented for each workflow execution status Validators are applied in production code

@Override
  public boolean canTransitionTo(WorkflowExecutionStatus status) {
    return validators.stream().filter(validator -> validator.getStatus() == status).findAny().get().validate(this);
  }
  
  
  public class WorkflowExecutionValidator extends Validator<WorkflowExecution> {
        @Override
        public boolean validate(WorkflowExecution workflowExecution) {
            return workflowExecution.getStatus() == WorkflowExecutionStatus.PAUSED;
        }
    }