import java.util.Set;

/**
 * Result of an upgrade strategy application.
 * Uses sets of paths to track which POMs were processed, modified, or had errors,
 * avoiding double-counting when multiple strategies affect the same POMs.
 *
 * @param processedPoms the set of POMs that were processed
 * @param modifiedPoms the set of POMs that were modified
 * @param errorPoms the set of POMs that had errors
 */

 * probably roll its own.
 * <p>
 * This implementation is backed by Maven Resolver API, supported protocols and transport selection depends on it. If
 * resolver preference regarding transport is altered, it will affect this service as well.
 *
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface TransportProvider extends Service {
    /**

        item1.id = 100L;
        item2.id = 200L;

        assertEquals(100L, item1.getId());
        assertEquals(200L, item2.getId());

        // Verify they don't affect each other
        item1.id = 300L;
        assertEquals(300L, item1.getId());
        assertEquals(200L, item2.getId());
    }

    @Test
    public void test_constructor() {

I think `Union[SomeType, None]` is more explicit about what it means.

It's just about the words and names. But those words can affect how you and your teammates think about the code.

As an example, let's take this function:

```python
from typing import Optional


def say_hi(name: Optional[str]):
    print(f"Hey {name}!")
```

        // Null username should be handled gracefully
        assertTrue(rateLimiter.checkAttempt(null, "192.168.1.8"), "Null username should be allowed");

        // Should not affect IP limiting
        rateLimiter.recordFailure(null, "192.168.1.8");
        assertTrue(rateLimiter.checkAttempt("realuser", "192.168.1.8"), "Should still track IP");
    }

    @Test

    /**
     * Invoked after MavenSession instance has been created.
     *
     * This callback is intended to allow extensions to inject execution properties,
     * activate profiles and perform similar tasks that affect MavenProject
     * instance construction.
     *
     * @param session the Maven session
     * @throws MavenExecutionException in case of issue
     */

        .addEqualityGroup(
            newDelegatingListWithEquals(LIST2),
            newProxyWithSubHandler1(LIST2), // Makes sure type of handler doesn't affect equality
            newProxyWithSubHandler2(LIST2))
        .addEqualityGroup(newDelegatingIterableWithEquals(LIST2)) // different interface
        .testEquals();
  }

* `upgrade`: Upgrades

        CharMappingItem item = new CharMappingItem(1L, originalInputs, "output");

        String[] returnedInputs = item.getInputs();

        // Modifying returned array should not affect original
        returnedInputs[0] = "modified";

        // Get again and verify not modified
        String[] inputs2 = item.getInputs();
        assertEquals("a", inputs2[0]);

			//    https://blog.cloudflare.com/when-tcp-sockets-refuse-to-die/
			// This is a sensitive configuration, it is better to set it to high values, > 60 secs since it can
			// affect clients reading data with a very slow pace  (disappropriate with socket buffer sizes)
			if opts.UserTimeout > 0 {
				_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, unix.TCP_USER_TIMEOUT, opts.UserTimeout)
			}