*
 * @author Chris Povirk
 */
/*
 * The whole thing is really @GwtIncompatible, but GwtJUnitConvertedTestModule doesn't have a
 * parameter for non-GWT, non-test files, and it didn't seem worth adding one for this unusual case.
 */
@GwtCompatible(emulated = true)
final class LenientSerializableTester {
  /*
   * TODO(cpovirk): move this to c.g.c.testing if we allow for c.g.c.annotations dependencies so
   * that it can be GWTified?
   */

 *
 * @author Chris Povirk
 */
/*
 * The whole thing is really @GwtIncompatible, but GwtJUnitConvertedTestModule doesn't have a
 * parameter for non-GWT, non-test files, and it didn't seem worth adding one for this unusual case.
 */
@GwtCompatible(emulated = true)
final class LenientSerializableTester {
  /*
   * TODO(cpovirk): move this to c.g.c.testing if we allow for c.g.c.annotations dependencies so
   * that it can be GWTified?
   */

Before making code changes, make sure you create a separate branch for these changes

```
git checkout -b my-new-feature
```

### Test MinIO server changes

After your code changes, make sure

- To add test cases for the new code. If you have questions about how to do it, please ask on our [Slack](https://slack.min.io) channel.
- To run `make verifiers`

        int c = -1;
        boolean eol = false;

        while ( !eol ) {
            switch ( c = read() ) {
            case -1:
            case '\n':
                eol = true;
                break;
            case '\r':
                eol = true;
                long cur = this.fp;
                if ( read() != '\n' ) {
                    this.fp = cur;
                }

		message:    "The SQL expression contains an unsupported use of CASE.",
		statusCode: 400,
		cause:      err,
	}
}

func errParseUnsupportedCaseClause(err error) *s3Error {
	return &s3Error{
		code:       "ParseUnsupportedCaseClause",
		message:    "The SQL expression contains an unsupported use of CASE.",
		statusCode: 400,
		cause:      err,
	}
}

				file := file
				if !c.Bool("combine") {
					file = strings.Map(func(r rune) rune {
						switch {
						case r >= 'a' && r <= 'z':
							return r
						case r >= 'A' && r <= 'Z':
							return r
						case r >= '0' && r <= '9':
							return r
						case strings.ContainsAny(string(r), "+=-_()!@."):
							return r
						default:
							return '_'
						}
					}, file)
				}

   * @throws NullPointerException if {@code elements} contains a null element
   * @since 3.0
   */
  public static <E> ImmutableList<E> copyOf(E[] elements) {
    switch (elements.length) {
      case 0:
        return of();
      case 1:
        return of(elements[0]);
      default:
        return construct(elements.clone());
    }
  }

  /**

				return np, grid.NewRemoteErr(err)
			}
			return np, grid.NewRemoteErrString(string(buf))
		}
		if !dryRun {
			globalServiceSignalCh <- signal
		}
	case serviceFreeze:
		freezeServices()
	case serviceUnFreeze:
		unfreezeServices()
	case serviceReloadDynamic:
		objAPI := newObjectLayerFn()
		if objAPI == nil {
			return np, grid.NewRemoteErr(errServerNotInitialized)
		}

import com.google.common.annotations.GwtCompatible;
import java.util.Map;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Test cases for a {@link Table} implementation supporting reads and writes.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault

### Tags with Enums

If you have a big application, you might end up accumulating **several tags**, and you would want to make sure you always use the **same tag** for related *path operations*.

In these cases, it could make sense to store the tags in an `Enum`.

**FastAPI** supports that the same way as with plain strings:

```Python hl_lines="1  8-10  13  18"
{!../../docs_src/path_operation_configuration/tutorial002b.py!}
```