### Question:
AAIVpnBindingResources { public void createVpnBinding(VpnBinding vpnBinding) { AAIResourceUri aaiVpnBindingResourceUri = AAIUriFactory.createResourceUri(AAIFluentTypeBuilder.network().vpnBinding(vpnBinding.getVpnId())); injectionHelper.getAaiClient().create(aaiVpnBindingResourceUri, aaiObjectMapper.mapVpnBinding(vpnBinding)); }  boolean existsCustomer(Customer customer); Optional<VpnBindings> getVpnBindingByCustomerVpnId(String customerVpnId); void createVpnBinding(VpnBinding vpnBinding); void createCustomer(Customer customer); Optional<org.onap.aai.domain.yang.VpnBinding> getVpnBinding(String vpnId); void connectCustomerToVpnBinding(String globalSubscriberId, String vpnId);  }### Answer:
@Test public void createVpnBindingTest() { doNothing().when(MOCK_aaiResourcesClient).create(isA(AAIResourceUri.class), isA(org.onap.aai.domain.yang.VpnBinding.class)); org.onap.aai.domain.yang.VpnBinding mappedVpnBinding = new org.onap.aai.domain.yang.VpnBinding(); mappedVpnBinding.setVpnName("test"); doReturn(mappedVpnBinding).when(MOCK_aaiObjectMapper).mapVpnBinding(isA(VpnBinding.class)); VpnBinding vpnBinding = buildVpnBinding(); aaiVpnBindingResources.createVpnBinding(vpnBinding); verify(MOCK_aaiResourcesClient, times(1)).create(isA(AAIResourceUri.class), isA(org.onap.aai.domain.yang.VpnBinding.class)); verify(MOCK_aaiObjectMapper, times(1)).mapVpnBinding(isA(VpnBinding.class)); }