}

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create handler with null context")
        void testConstructorWithNullContext() {
            // When
            Handler testHandler = new Handler(null);

            // Then
            assertNotNull(testHandler);
        }

        @Test

        // Then
        assertNotNull(client, "Should create client instance");
    }

    @Test
    @DisplayName("Should handle constructor with null context")
    void testConstructorWithNullContext() {
        // When/Then
        assertThrows(Exception.class, () -> {
            new NameServiceClientImpl(null);
        }, "Should throw exception for null context");
    }

    @Test