- Use `OptionalEntity<T>` for nullable returns
- Plain classes (no extends/implements)

### Helper
- Stateless utility classes
- Access via `ComponentUtil.getXyzHelper()`
- Named with "Helper" suffix

### DBFlute Generated Code
```
opensearch/{index}/
├── bsentity/, bsbhv/    # Base classes (DO NOT EDIT)
├── exentity/, exbhv/    # Extended classes (customize here)

                CollectionFeature.GENERAL_PURPOSE,
                CollectionFeature.SUPPORTS_ITERATOR_REMOVE,
                CollectionFeature.ALLOWS_NULL_QUERIES,
                MultisetFeature.ENTRIES_ARE_VIEWS)
            .named("EnumMultiset")
            .createTestSuite());
    suite.addTestSuite(EnumMultisetTest.class);
    return suite;
  }

  @AndroidIncompatible // test-suite builders

  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();
    suite.addTest(
        MapTestSuiteBuilder.using(new ImmutableEnumMapGenerator())
            .named("Maps.immutableEnumMap")
            .withFeatures(CollectionSize.ANY, SERIALIZABLE, ALLOWS_NULL_QUERIES)
            .createTestSuite());
    suite.addTestSuite(ImmutableEnumMapTest.class);
    return suite;
  }

                    include '*'
                }
                restTests {
                    includeCore 'foo'
                    includeXpack 'bar'
                }
            }

            tasks.named("copyYamlTestsTask").configure {
                it.substitutions = [ 'replacedValue' : 'replacedWithValue' ]
            }
        """
        String apiCore1 = "foo1.json"
        String apiCore2 = "foo2.json"

some integration tests to fail. This is because integration tests have timings
for cluster formation, discovery, etc. that can be exceeded if name resolution
takes a long time.
To fix this, make sure you have your computer name (as returned by `hostname`)
inside `/etc/hosts`, e.g.:
....
127.0.0.1       localhost ElasticMBP.local
255.255.255.255 broadcasthost
::1             localhost ElasticMBP.local`

 *
 * There are trade-offs when selecting which options to include when negotiating a secure connection
 * to a remote host. Newer TLS options are quite useful:
 *
 *  * Server Name Indication (SNI) enables one IP address to negotiate secure connections for
 *    multiple domain names.
 *
 *  * Application Layer Protocol Negotiation (ALPN) enables the HTTPS port (443) to be used to
 *    negotiate HTTP/2.
 *

    }
  }

  /**
   * Returns the parameter [name] of this media type, or null if this media type does not define
   * such a parameter.
   */
  fun parameter(name: String): String? {
    for (i in parameterNamesAndValues.indices step 2) {
      if (parameterNamesAndValues[i].equals(name, ignoreCase = true)) {
        return parameterNamesAndValues[i + 1]
      }
    }
    return null

///

## Atalho para lembrar os nomes { #shortcut-to-remember-the-names }

Vamos ver o exemplo anterior novamente:

{* ../../docs_src/response_status_code/tutorial001_py310.py hl[6] *}

`201` é o código de status para "Criado".

      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.

      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.