I have a problem by aktivating my own plugin

[MohamedNashaat]

The following snippet I have wrote in order to get possible information about PostFunctions and Conditions that exist in Workflow

@Named("MyJiraWorkFlow")
public class MyJiraWorkFlow extends AbstractWorkflowEvent {

    private MyJiraWorkFlow(@ComponentImport @Nonnull JiraWorkflow workflow) {
        super(workflow);
        workoutPostFunctions();
    }

    @Override
    public JiraWorkflow getWorkflow() {
        workoutPostFunctions();
        return super.getWorkflow();

    }


    public void workoutPostFunctions() {
        Map<ActionDescriptor, Collection<FunctionDescriptor>> functionDescriptors = new HashMap<>();
        Collection<ActionDescriptor> allActions = getWorkflow().getAllActions();
        allActions.forEach(e -> functionDescriptors.put(e, getWorkflow().getPostFunctionsForTransition(e)));


        functionDescriptors
                .forEach((e, x) -> {
                    System.out.println("----------------------------------Begin--------------------------------------");
                    System.out.println("Action Name: " + e.getName());
                    System.out.println("Conditional Results: " + e.getConditionalResults().size());
                    System.out.println("Function Descriptor: " + x.iterator().next().asXML());
                    System.out.println("-----------------------------------End---------------------------------------");
                });
    }
}

The problem is, once I try to activate my plugin the following error shows up:

 QuickReload - Plugin Installer ERROR [c.a.p.osgi.factory.OsgiPlugin] Plugin 'my.plugin' never resolved service '&jiraWorkflow' with filter '(&(objectClass=com.atlassian.jira.workflow.JiraWorkflow)(objectClass=com.atlassian.jira.workflow.JiraWorkflow))'

Looking forward to a suggestion or a solution, thanks in advance