when(mockAddress.firstCalledName()).thenReturn(expectedFirstName);

        // When
        String firstName = mockAddress.firstCalledName();

        // Then
        assertEquals(expectedFirstName, firstName, "Should return first called name");
        assertNotNull(firstName, "First called name should not be null");
    }

    @Test

    public void test_getName_cachesBehavior() {
        // Test that getName() caches the result after first call
        String firstName = rankFusionSearcher.getName();
        String secondName = rankFusionSearcher.getName();
        assertSame(firstName, secondName);
        assertEquals("test_rank_fusion", firstName);
    }

    public void test_getName_customSearcherClass() {
        // Test with different searcher implementation

```Python
    first_name, last_name
```

to:

```Python
    first_name: str, last_name: str
```

That's it.

Those are the "type hints":

{* ../../docs_src/python_types/tutorial002.py hl[1] *}

That is not the same as declaring default values like would be with:

```Python
    first_name="john", last_name="doe"
```

It's a different thing.