4. If you want *faster* PR reviews, read how: https://git.k8s.io/community/contributors/guide/pull-requests.md#best-practices-for-faster-reviews
5. If the PR is unfinished, see how to mark it: https://git.k8s.io/community/contributors/guide/pull-requests.md#marking-unfinished-pull-requests
-->

#### What type of PR is this?

<!--
Add one of the following kinds:
/kind bug
/kind cleanup

                "loc": ["query", "foo"],
                "msg": "ensure this value has at least 1 characters",
                "type": "value_error.any_str.min_length",
            }
        )
    ]
}


@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        ("/default", 200, {"foo": "foo"}),
        ("/default?foo=bar", 200, {"foo": "bar"}),
        ("/required?foo=bar", 200, {"foo": "bar"}),

    }

    public PluginDescriptor build(ReaderSupplier readerSupplier, String source) throws PlexusConfigurationException {
        try (BufferedReader br = new BufferedReader(readerSupplier.open(), BUFFER_SIZE)) {
            br.mark(BUFFER_SIZE);
            XMLStreamReader xsr = XMLInputFactory.newFactory().createXMLStreamReader(br);
            xsr.nextTag();
            String nsUri = xsr.getNamespaceURI();

    }

    @Override
    public String toString() {
        return input.substring(pos);
    }

    public boolean isEmpty() {
        return pos == input.length();
    }

    public void mark() {
        markPos = pos;
    }

    public void next() {
        next(1);
    }

    public void next(int n) {
        pos += n;
    }

    public boolean lookingAt(char c) {

        return false;
    }

    // ===================================================================================
    //                                                                     Birthplace Mark
    //                                                                     ===============
    @Override
    public void markAsSelect() {
        __createdBySelect = true;
    }

    @Override

        return false;
    }

    // ===================================================================================
    //                                                                     Birthplace Mark
    //                                                                     ===============
    @Override
    public void markAsSelect() {
        __createdBySelect = true;
    }

    @Override

	found := make(map[string]struct{}, len(d.Cache))

	// Mark all children recursively
	var mark func(entry dataUsageEntry)
	mark = func(entry dataUsageEntry) {
		for k := range entry.Children {
			found[k] = struct{}{}
			if ch, ok := d.Cache[k]; ok {
				mark(ch)
			}
		}
	}
	found[top] = struct{}{}
	mark(*topE)

	// Delete all entries not found.
	for k := range d.Cache {

                    e);
          }
        }
      } finally {
        if (stillRunning) {
          // An Error is bubbling up. We should mark ourselves as no longer running. That way, if
          // anyone tries to keep using us, we won't be corrupted.
          synchronized (PerListenerQueue.this) {
            isThreadScheduled = false;
          }
        }

        return new ExtractData(extractString(content));
    }

    protected String getEncoding(final BufferedInputStream bis) {
        final byte[] b = new byte[preloadSizeForCharset];
        try {
            bis.mark(preloadSizeForCharset);
            @SuppressWarnings("resource")
            final BOMInputStream bomIn = new BOMInputStream(bis, false, ByteOrderMark.UTF_8, ByteOrderMark.UTF_16BE, ByteOrderMark.UTF_16LE,

The way to describe this in OpenAPI, is to mark that field as **required**, because it will always be there.

Because of that, the JSON Schema for a model can be different depending on if it's used for **input or output**: