modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextHelper.java [91:124]:
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    public ComponentReference createSelfReference(Component component,
                                                  ComponentService service,
                                                  Class<?> businessInterface) throws CloneNotSupportedException,
        InvalidInterfaceException {
        ComponentReference componentReference = assemblyFactory.createComponentReference();
        componentReference.setName("$self$." + service.getName());
        for (Binding binding : service.getBindings()) {
            if (binding instanceof OptimizableBinding) {
                OptimizableBinding optimizableBinding = (OptimizableBinding)((OptimizableBinding)binding).clone();
                optimizableBinding.setTargetBinding(binding);
                optimizableBinding.setTargetComponent(component);
                optimizableBinding.setTargetComponentService(service);
                componentReference.getBindings().add(optimizableBinding);
            } else {
                componentReference.getBindings().add(binding);
            }
        }

        componentReference.setCallback(service.getCallback());
        componentReference.getTargets().add(service);
        componentReference.getPolicySets().addAll(service.getPolicySets());
        componentReference.getRequiredIntents().addAll(service.getRequiredIntents());

        InterfaceContract interfaceContract = service.getInterfaceContract();
        Service componentTypeService = service.getService();
        if (componentTypeService != null && componentTypeService.getInterfaceContract() != null) {
            interfaceContract = componentTypeService.getInterfaceContract();
        }
        interfaceContract = getInterfaceContract(interfaceContract, businessInterface);
        componentReference.setInterfaceContract(interfaceContract);
        componentReference.setMultiplicity(Multiplicity.ONE_ONE);
        // component.getReferences().add(componentReference);
        return componentReference;
    }
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modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextImpl.java [315:348]:
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    private ComponentReference createSelfReference(Component component,
                                                   ComponentService service,
                                                   Class<?> businessInterface) throws CloneNotSupportedException,
        InvalidInterfaceException {
        ComponentReference componentReference = assemblyFactory.createComponentReference();
        componentReference.setName("$self$." + service.getName());
        for (Binding binding : service.getBindings()) {
            if (binding instanceof OptimizableBinding) {
                OptimizableBinding optimizableBinding = (OptimizableBinding)((OptimizableBinding)binding).clone();
                optimizableBinding.setTargetBinding(binding);
                optimizableBinding.setTargetComponent(component);
                optimizableBinding.setTargetComponentService(service);
                componentReference.getBindings().add(optimizableBinding);
            } else {
                componentReference.getBindings().add(binding);
            }
        }

        componentReference.setCallback(service.getCallback());
        componentReference.getTargets().add(service);
        componentReference.getPolicySets().addAll(service.getPolicySets());
        componentReference.getRequiredIntents().addAll(service.getRequiredIntents());

        InterfaceContract interfaceContract = service.getInterfaceContract();
        Service componentTypeService = service.getService();
        if (componentTypeService != null && componentTypeService.getInterfaceContract() != null) {
            interfaceContract = componentTypeService.getInterfaceContract();
        }
        interfaceContract = getInterfaceContract(interfaceContract, businessInterface);
        componentReference.setInterfaceContract(interfaceContract);
        componentReference.setMultiplicity(Multiplicity.ONE_ONE);
        // component.getReferences().add(componentReference);
        return componentReference;
    }
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