You could create an API with a *path operation* that could trigger a request to an *external API* created by someone else (probably the same developer that would be *using* your API).

      boolean thisIsNumber = hextets[i] >= 0;
      if (thisIsNumber) {
        if (lastWasNumber) {
          buf.append(':');
        }
        buf.append(Integer.toHexString(hextets[i]));
      } else {
        if (i == 0 || lastWasNumber) {
          buf.append("::");
        }
      }
      lastWasNumber = thisIsNumber;
    }
    return buf.toString();
  }

  /**

  private interface ChainingCalls {
    // A method that is defined to 'return this'
    @CanIgnoreReturnValue
    ChainingCalls chainingCall();

    // A method that just happens to return a ChainingCalls object
    ChainingCalls nonChainingCall();
  }

  private static class ForwardingChainingCalls implements ChainingCalls {
    final ChainingCalls delegate;

}

// DeleteVol - Deletes a volume over the network.
func (client *storageRESTClient) DeleteVol(ctx context.Context, volume string, forceDelete bool) (err error) {
	return errInvalidArgument
}

// AppendFile - append to a file.
func (client *storageRESTClient) AppendFile(ctx context.Context, volume string, path string, buf []byte) error {
	values := make(url.Values)
	values.Set(storageRESTVolume, volume)

        )
    )
)
@endlocal & set JVM_CONFIG_MAVEN_OPTS=%JVM_CONFIG_MAVEN_OPTS%

:endReadJvmConfig

@REM do not let MAVEN_PROJECTBASEDIR end with a single backslash which would escape the double quote. This happens when .mvn at drive root.
if "_%MAVEN_PROJECTBASEDIR:~-1%"=="_\" set "MAVEN_PROJECTBASEDIR=%MAVEN_PROJECTBASEDIR%\"

if "%MAVEN_DEBUG_ADDRESS%"=="" set MAVEN_DEBUG_ADDRESS=localhost:8000

goto endHandleArgs

		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		copy(objectEncryptionKey[:], key)

		var nonce [12]byte
		tmp := sha256.Sum256(fmt.Append(nil, uploadID, partID))
		copy(nonce[:], tmp[:12])

		partEncryptionKey := objectEncryptionKey.DerivePartKey(uint32(partID))
		encReader, err := sio.EncryptReader(reader, sio.Config{
			Key:   partEncryptionKey[:],

        assertEquals(58L, MemoryUtil.sizeOf("こん"));

        // Very long string
        StringBuilder longString = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            longString.append("x");
        }
        assertEquals(1056L, MemoryUtil.sizeOf(longString.toString()));
    }

    public void test_sizeOf_numberTypes() {
        // Test various Number subclasses

        // Test with very large strings
        StringBuilder largeString = new StringBuilder();
        for (int i = 0; i < 10000; i++) {
            largeString.append("x");
        }
        OptionalEntity<String> largeStringOpt = OptionalUtil.ofNullable(largeString.toString());
        assertTrue(largeStringOpt.isPresent());
        assertEquals(10000, largeStringOpt.get().length());

Since HTTP requests frequently happen in parallel, connection pooling must be thread-safe.

These are the primary classes involved with establishing, sharing, and terminating connections:

<img src="/img/tutorial/body/image02.png">

## Editor support { #editor-support }

In your editor, inside your function you will get type hints and completion everywhere (this wouldn't happen if you received a `dict` instead of a Pydantic model):

<img src="/img/tutorial/body/image03.png">

You also get error checks for incorrect type operations:

<img src="/img/tutorial/body/image04.png">