public void testAssignableClassToType() {
    TypeToken<List<String>> tokenL = new TypeToken<List<String>>() {};
    assertTrue(tokenL.isSupertypeOf(StringList.class));
    assertFalse(tokenL.isSupertypeOf(List.class));

    TypeToken<First<String>> tokenF = new TypeToken<First<String>>() {};
    assertTrue(tokenF.isSupertypeOf(ConcreteIntegerString.class));
    assertFalse(tokenF.isSupertypeOf(ConcreteStringInteger.class));
  }

  public void testAssignableClassToType() {
    TypeToken<List<String>> tokenL = new TypeToken<List<String>>() {};
    assertTrue(tokenL.isSupertypeOf(StringList.class));
    assertFalse(tokenL.isSupertypeOf(List.class));

    TypeToken<First<String>> tokenF = new TypeToken<First<String>>() {};
    assertTrue(tokenF.isSupertypeOf(ConcreteIntegerString.class));
    assertFalse(tokenF.isSupertypeOf(ConcreteStringInteger.class));
  }

    runs-on: ubuntu-latest
    permissions:
      # Needed to upload the results to code-scanning dashboard.
      security-events: write
      # Needed to publish results and get a badge (see publish_results below).
      id-token: write
      # Uncomment the permissions below if installing in a private repository.
      # contents: read
      # actions: read

    steps:
      - name: "Checkout code"

      - name: 'Cancel previous runs'
        uses: styfle/cancel-workflow-action@85880fa0301c86cca9da44039ee3bb12d3bedbfa # 0.12.1
        with:
          access_token: ${{ github.token }}
      - name: 'Check out repository'
        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
      # When we specify multiple JDKs, the final one becomes the default, which is used to execute Maven itself.

String unescaped = JsonUtil.unescape(escaped);

// Text tokenization
Tokenizer tokenizer = new Tokenizer("field1,field2,field3", ",");
while (tokenizer.hasMoreTokens()) {
    String token = tokenizer.nextToken();
    // Process each token
}

// Decimal formatting
DecimalFormat format = DecimalFormatUtil.getDecimalFormat("###,###.00");
```

### Exception Handling
```java
import org.codelibs.core.exception.*;

      iterations++;
      if (iterations >= maxIterations) {
        @SuppressWarnings("nullness") // safe because we pass sort() a range that contains real Ts
        T[] castBuffer = (T[]) buffer;
        // We've already taken O(k log k), let's make sure we don't take longer than O(k log k).
        sort(castBuffer, left, right + 1, comparator);
        break;
      }
    }
    bufferSize = k;