* `id`
* `name`
* `age`
* `secret_name`

{* ../../docs_src/sql_databases/tutorial002_an_py310.py ln[7:14] hl[12:14] *}

#### `HeroPublic` - the public *data model*

Next, we create a `HeroPublic` model, this is the one that will be **returned** to the clients of the API.

It has the same fields as `HeroBase`, so it won't include `secret_name`.

      try {
        map = makePopulatedMap();
      } catch (UnsupportedOperationException e) {
        return;
      }
      final String keyToRemove = map.keySet().iterator().next();
      if (supportsRemove) {
        int initialSize = map.size();
        map.get(keyToRemove);
        map.remove(keyToRemove);
        // This line doesn't hold - see the Javadoc comments above.

      try {
        map = makePopulatedMap();
      } catch (UnsupportedOperationException e) {
        return;
      }
      final String keyToRemove = map.keySet().iterator().next();
      if (supportsRemove) {
        int initialSize = map.size();
        map.get(keyToRemove);
        map.remove(keyToRemove);
        // This line doesn't hold - see the Javadoc comments above.

```Python hl_lines="3" title="app/routers/items.py"
{!../../docs_src/bigger_applications/app/routers/items.py!}
```

#### How relative imports work

/// tip

If you know perfectly how imports work, continue to the next section below.

///

A single dot `.`, like in:

```Python
from .dependencies import get_token_header
```

would mean:

labels.facet_filetype_odp=ODF Presentation
labels.facet_filetype_pdf=PDF
labels.facet_filetype_fb2=FictionBook
labels.facet_filetype_epub=EPUB
labels.facet_filetype_ibooks=iBooks
labels.facet_filetype_txt=Plain Text
labels.facet_filetype_rtf=Rich Text Format
labels.facet_filetype_chm=Compiled HTML Help
labels.facet_filetype_zip=ZIP Archive
labels.facet_filetype_7z=7z Archive
labels.facet_filetype_bz=Bz Archive
labels.facet_filetype_bz2=Bz2 Archive

aiming to keep the semantics simple, understandable, and useful.
This section gives a general overview of the approach and should suffice for most programmers.
The memory model is specified more formally in the next section.
</p>

<p>
A data race is defined as
a write to a memory location happening concurrently with another read or write to that same location,

        return username;
    }
/**
 * Returns the password in plain text or <tt>null</tt> if the raw password
 * hashes were used to construct this <tt>NtlmPasswordAuthentication</tt>
 * object which will be the case when NTLM HTTP Authentication is
 * used. There is no way to retrieve a users password in plain text unless
 * it is supplied by the user at runtime.
 */
    public String getPassword() {

But it's signed. So, when you receive a token that you emitted, you can verify that you actually emitted it.

That way, you can create a token with an expiration of, let's say, 1 week. And then when the user comes back the next day with the token, you know that user is still logged in to your system.

                @Override
                public @Nullable Void call() throws Exception {
                  barrier.await();
                  Integer first = graph.nodes().iterator().next();
                  for (Integer node : graph.nodes()) {
                    Set<Integer> unused = graph.successors(node);
                  }
                  /*

(min-width:576px){.text-sm-left{text-align:left!important}.text-sm-right{text-align:right!important}.text-sm-center{text-align:center!important}}@media (min-width:768px){.text-md-left{text-align:left!important}.text-md-right{text-align:right!important}.text-md-center{text-align:center!important}}@media (min-width:992px){.text-lg-left{text-align:left!important}.text-lg-right{text-align:right!important}.text-lg-center{text-align:center!important}}@media (min-width:1200px){.text-xl-left{text-align:left!impor...