*
   * {@snippet :
   * CharMatcher.is('a').replaceFrom("radar", 'o')
   * }
   *
   * ... returns {@code "rodor"}.
   *
   * <p>The default implementation uses {@link #indexIn(CharSequence)} to find the first matching
   * character, then iterates the remainder of the sequence calling {@link #matches(char)} for each
   * character.
   *

                    .forEach(k -> System.setProperty(k.getKey(), k.getValue()));
        }
    }

    /**
     * Sets up Guice class loading mode to CHILD, if not already set.
     * Default Guice class loading mode uses a terminally deprecated JDK memory-access classes.
     */
    protected void setupGuiceClassLoading(C context) {
        if (System.getProperty("guice_custom_class_loading", "").isBlank()) {

@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Or use <code>async def</code>...</summary>

If your code uses `async` / `await`, use `async def`:

```Python hl_lines="7  12"
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():
    return {"Hello": "World"}

name: Comment on a closed issue

on:
  issue_comment:
    types: [created]

jobs:
  reconsider_closed_issue:
    runs-on: ubuntu-latest
    permissions:
      issues: write
    steps:

          && hashCodeInsensitiveToArgReference(
              factory, args, i, generateDummyArg(param, newFreshValueGenerator()))) {
        // If the implementation uses identityHashCode(), referential equality is
        // probably intended. So no point in using an equal-but-different factory argument.
        // We check twice to avoid confusion caused by accidental hash collision.

          <type>String</type>
        </field>
        <field>
          <name>layout</name>
          <version>1.0.0+</version>
          <description>
            The type of layout this repository uses for locating and
            storing artifacts - can be "legacy" or "default".
          </description>
          <type>String</type>
          <defaultValue>default</defaultValue>
        </field>
      </fields>

      setMap(map);
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**
   * Creates a new {@code ListMultimap} that uses the provided map and factory. It can generate a
   * multimap based on arbitrary {@link Map} and {@link List} classes. Most users should prefer

      setMap(map);
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**
   * Creates a new {@code ListMultimap} that uses the provided map and factory. It can generate a
   * multimap based on arbitrary {@link Map} and {@link List} classes. Most users should prefer

   * {@code Ordering.natural()} if the left map uses the natural ordering of its elements. This
   * difference is an immutable snapshot of the state of the maps at the time this method is called.
   * It will never change, even if the maps change at a later time.
   *
   * <p>Since this method uses {@code TreeMap} instances internally, the keys of the right map must

  }

  /**
   * Returns an immutable sorted set containing the elements of a sorted set, sorted by the same
   * {@code Comparator}. That behavior differs from {@link #copyOf(Iterable)}, which always uses the
   * natural ordering of the elements.
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is