func (f *File) DataOffset() (offset int64, err error) {
	bodyOffset, err := f.findBodyOffset()
	if err != nil {
		return
	}
	return f.headerOffset + bodyOffset, nil
}

// Open returns a [ReadCloser] that provides access to the [File]'s contents.
// Multiple files may be read concurrently.
func (f *File) Open() (io.ReadCloser, error) {
	bodyOffset, err := f.findBodyOffset()
	if err != nil {
		return nil, err
	}

# Bigger Applications - Multiple Files

If you are building an application or a web API, it's rarely the case that you can put everything in a single file.

**FastAPI** provides a convenience tool to structure your application while keeping all the flexibility.

/// info

If you come from Flask, this would be the equivalent of Flask's Blueprints.

///

## An example file structure

Let's say you have a file structure like this:

```

   enforceable. Any law or regulation which provides that the language of a
   contract shall be construed against the drafter shall not be used to construe
   this License against a Contributor.


10. Versions of the License

10.1. New Versions

      Mozilla Foundation is the license steward. Except as provided in Section

func (r *RingBuffer) WriteCloser() io.WriteCloser {
	return &writeCloser{RingBuffer: r}
}

type writeCloser struct {
	*RingBuffer
}

// Close provides a close method for the WriteCloser.
func (wc *writeCloser) Close() error {
	wc.CloseWriter()
	return wc.Flush()

 *
 * <h4>Creation</h4>
 *
 * <p>Except for logically "abstract" types like {@code ImmutableCollection} itself, each {@code
 * Immutable} type provides the static operations you need to obtain instances of that type. These
 * usually include:
 *
 * <ul>
 *   <li>Static methods named {@code of}, accepting an explicit list of elements or entries.

   enforceable. Any law or regulation which provides that the language of a
   contract shall be construed against the drafter shall not be used to construe
   this License against a Contributor.


10. Versions of the License

10.1. New Versions

      Mozilla Foundation is the license steward. Except as provided in Section

   necessary to make it enforceable. Any law or regulation which provides that
   the language of a contract shall be construed against the drafter shall not
   be used to construe this License against a Contributor.


10. Versions of the License

10.1. New Versions

      Mozilla Foundation is the license steward. Except as provided in Section

    assertTrue(Arrays.equals(I18N.getBytes(UTF_8), Files.toByteArray(i18nFile)));
    assertTrue(Arrays.equals(I18N.getBytes(UTF_8), Files.asByteSource(i18nFile).read()));
  }

  /** A {@link File} that provides a specialized value for {@link File#length()}. */
  private static class BadLengthFile extends File {

    private final long badLength;

    public BadLengthFile(File delegate, long badLength) {

 * 2^32 + x}). The methods for which signedness is not an issue are in {@link Ints}, as well as
 * signed versions of methods for which signedness is an issue.
 *
 * <p>In addition, this class provides several static methods for converting an {@code int} to a
 * {@code String} and a {@code String} to an {@code int} that treat the {@code int} as an unsigned
 * number.
 *

 * 2^32 + x}). The methods for which signedness is not an issue are in {@link Ints}, as well as
 * signed versions of methods for which signedness is an issue.
 *
 * <p>In addition, this class provides several static methods for converting an {@code int} to a
 * {@code String} and a {@code String} to an {@code int} that treat the {@code int} as an unsigned
 * number.
 *