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

ran off as hard as she could, and soon found herself safe in a
thick wood.

  `The first thing I've got to do,' said Alice to herself, as she
wandered about in the wood, `is to grow to my right size again;
and the second thing is to find my way into that lovely garden.
I think that will be the best plan.'

  It sounded an excellent plan, no doubt, and very neatly and

ran off as hard as she could, and soon found herself safe in a
thick wood.

  `The first thing I've got to do,' said Alice to herself, as she
wandered about in the wood, `is to grow to my right size again;
and the second thing is to find my way into that lovely garden.
I think that will be the best plan.'

  It sounded an excellent plan, no doubt, and very neatly and

You can learn more about [FastAPI versions and how to pin and upgrade them](https://fastapi.tiangolo.com/deployment/versions/) for your project in the docs.

## Reporting a Vulnerability

 */
package org.apache.maven.artifact.resolver.filter;

import java.util.List;

import org.apache.maven.artifact.Artifact;

/**
 * Filter to exclude from a list of artifact patterns.
 *
 * TODO I think this is equiv. to exclusion set filter in maven-core
 */
public class ExcludesArtifactFilter extends IncludesArtifactFilter {
    public ExcludesArtifactFilter(List<String> patterns) {
        super(patterns);
    }

/// tip

This is the ultimate **vibe-driven development** experience. You don't need to think about what your API does, just let the LLM handle it. 🧘

///

## Try It { #try-it }

Go ahead, try it:

{* ../../docs_src/vibe/tutorial001_py310.py *}

    isInterruptibleRegistered.await();
    RuntimeException expected = assertThrows(RuntimeException.class, task::interruptTask);
    assertThat(expected)
        .hasMessageThat()
        .isEqualTo("I bet you didn't think Thread.interrupt could throw");
    /*
     * We need to wait for the runner to exit. It used to be that the runner would get stuck in the
     * busy loop when interrupt threw.
     *

    isInterruptibleRegistered.await();
    RuntimeException expected = assertThrows(RuntimeException.class, task::interruptTask);
    assertThat(expected)
        .hasMessageThat()
        .isEqualTo("I bet you didn't think Thread.interrupt could throw");
    /*
     * We need to wait for the runner to exit. It used to be that the runner would get stuck in the
     * busy loop when interrupt threw.
     *

            println("CACHE_MISS in task $taskPath")
            cacheMiss.set(true)
        }
    }
}


/**
 *  We monitor some tasks in non-seed builds. If a task executed in a non-seed build, we think it as "CACHE_MISS".
 */
fun isCacheMissMonitoredTask(task: Task) = task.isCompileCacheMissMonitoredTask() || task.project.isAsciidoctorCacheMissTask()

       * doesn't need access to the futures again, so we can just pass `null`.
       *
       * TODO(b/112550045): Allocating a single, cheaper listener is (I think) only an optimization.
       * If we make some other optimizations, this one will no longer be necessary. The optimization
       * could actually hurt in some cases, as it forces us to keep all inputs in memory until the