{* ../../docs_src/first_steps/tutorial001_py39.py hl[3] *}

Here the `app` variable will be an "instance" of the class `FastAPI`.

This will be the main point of interaction to create all your API.

### Step 3: create a *path operation* { #step-3-create-a-path-operation }

#### Path { #path }

"Path" here refers to the last part of the URL starting from the first `/`.

of dynamically. Here's the output from bazel query:
EOF
  cat $BATS_TEST_TMPDIR/out
  [[ ! -s $BATS_TEST_TMPDIR/out ]]
}

@test "All tensorflow.org/code links point to real files" {
    for i in $(grep -onI 'https://www.tensorflow.org/code/[a-zA-Z0-9/._-]\+' -r tensorflow); do
        target=$(echo $i | sed 's!.*https://www.tensorflow.org/code/!!g')

```

Update "Bosnian" with the new language.

And update the search link to point to the new language label that will be created, like `lang-bs`.

Create and add the label to that new Discussion just created, like `lang-bs`.

These custom validators are for things that can be checked with **only** the **same data** provided in the request.

///

### Understand that Code { #understand-that-code }

The important point is just using **`AfterValidator` with a function inside `Annotated`**. Feel free to skip this part. 🤸

---

But if you're curious about this specific code example and you're still entertained, here are some extra details.

            if (this.andxOffset == 0) { /* Snap server workaround */
                this.andxCommand = (byte) 0xFF;
            }

            /*
             * no point in calling readParameterWordsWireFormat if there are no more
             * parameter words. besides, win98 doesn't return "OptionalSupport" field
             */

            if (this.wordCount > 2) {

	PrefixEnabledFn func(prefix string) bool // function which returns true if versioning is enabled on prefix

	// IndexCB will return any index created but the compression.
	// Object must have been read at this point.
	IndexCB func() []byte

	// InclFreeVersions indicates that free versions need to be included
	// when looking up a version by fi.VersionID
	InclFreeVersions bool

* <a href="https://fastapi.tiangolo.com/img/foo.jpg" class="external-link" target="_blank">Link to an image</a>

The link text should get translated, the link address should point to the translation:

* <a href="https://fastapi.tiangolo.com/" class="external-link" target="_blank">FastAPI link</a>

////

//// tab | Info

        // Then
        int bodyOffset = Smb2Constants.SMB2_HEADER_LENGTH;
        int securityBufferOffset = SMBUtil.readInt2(buffer, bodyOffset + 12);

        // The offset should point to the location after the fixed structure (relative to header start)
        int expectedOffset = Smb2Constants.SMB2_HEADER_LENGTH + 24;
        while ((expectedOffset % 8) != 0) {
            expectedOffset++; // Account for pad8

        try {
            robotsTxt = robotsTxtHelper.parse(in);
        } finally {
            CloseableUtil.closeQuietly(in);
        }

        // Floating point crawl-delay should be ignored (as it expects integer)
        assertNotNull(robotsTxt);
        // Should either parse as 2 or be ignored
        assertTrue(robotsTxt.getCrawlDelay("TestBot") >= 0);
    }

       *
       * We store `localFuturesOrNull` inside the listener because `this.futures` might be nulled
       * out by the time the listener runs for the final future -- at which point we need to check
       * all inputs for exceptions *if* we're collecting values. If we're not, then the listener
       * doesn't need access to the futures again, so we can just pass `null`.
       *