In this case, it's the `str`:

```Python
"{$callback_url}/invoices/{$request.body.id}"
```

So, if your API user (the external developer) sends a request to *your API* to:

```
https://yourapi.com/invoices/?callback_url=https://www.external.org/events
```

with a JSON body of:

```JSON
{

        equivalence =
            (set1, set2) -> {
              if (!set1.equals(set2)) {
                return false;
              }
              for (int i = 0; i < set1.size(); i++) {
                if (!set1.asList().get(i).fullEquals(set2.asList().get(i))) {
                  return false;
                }
              }

    expectContents(expected);
  }

  private void replaceValue(List<Entry<K, V>> expected, Entry<K, V> newEntry) {
    for (ListIterator<Entry<K, V>> i = expected.listIterator(); i.hasNext(); ) {
      if (Helpers.equal(i.next().getKey(), newEntry.getKey())) {
        i.set(newEntry);
        return;
      }
    }

    throw new IllegalArgumentException(

                SmbConstants.TYPE_NAMED_PIPE, SmbConstants.TYPE_PRINTER, SmbConstants.TYPE_COMM };

        for (int type : types) {
            // Check if it's a power of 2 (has exactly one bit set)
            assertTrue(type > 0 && (type & (type - 1)) == 0, "Resource type " + type + " should be a power of 2");
        }
    }

    @DisplayName("Invalid buffers throw appropriate exceptions")
    void invalidInputsThrow(String name, Object bufferSupplierOrBytes, Class<? extends Throwable> expected) {
        // Arrange
        byte[] buf;
        if (bufferSupplierOrBytes instanceof byte[]) {
            buf = (byte[]) bufferSupplierOrBytes;
        } else {
            @SuppressWarnings("unchecked")

## Get started

In this document we will explain in detail on how to configure all the prerequisites.

> NOTE: If you are interested in AssumeRole API only, skip to [here](https://github.com/minio/minio/blob/master/docs/sts/assume-role.md)

### Prerequisites

            // Setup close to call real method
            doCallRealMethod().when(handle).close();

            // The finally block ensures pipe is closed even if handle close fails
            // Since the real method will propagate the exception from handle.close(),
            // we need to catch it to verify that pipe.close() was still called
            try {

    private SmbTree smbTree;

    @Mock
    private SmbTree mockWrappedTree;

    /**
     * Setup method executed before each test.
     */
    @BeforeEach
    void setUp() {
        // Common setup if needed
    }

    /**
     * Test for unwrap() method with matching type.
     * Verifies that unwrap returns the correct instance when the type matches.
     */
    @Test
    void testUnwrap_withMatchingType() {

            private CommonServerMessageBlockResponse response;

            @Override
            public int decode(byte[] buffer, int bufferIndex) throws SMBProtocolDecodingException {
                if (buffer == null || buffer.length < bufferIndex + 4) {
                    throw new SMBProtocolDecodingException("Buffer too small");
                }
                return 4;
            }

            @Override

    }

    private void assertContentType(final String expect, final String path, final String name) throws IOException {
        final MimeTypeHelper mimeTypeHelper = container.getComponent("mimeTypeHelper");
        if (path != null) {
            try (final InputStream is = ResourceUtil.getResourceAsStream(path)) {
                assertEquals(expect, mimeTypeHelper.getContentType(is, name));
            }
        } else {