* Gets the extractor for the specified file extension.
     *
     * @param ext the file extension
     * @return the extractor for the extension, or null if not found
     */
    private Extractor getExtractor(final String ext) {
        return extractorMap.get(ext);
    }

    /**
     * Gets the output extension for the specified input extension.
     *
     * @param extension the input file extension

 */

/**
 * Provides support for Maven core extensions configuration and management.
 *
 * <p>This package contains classes for:</p>
 * <ul>
 *   <li>Extension configuration model</li>
 *   <li>Extension loading and validation</li>
 *   <li>Extension lifecycle management</li>
 * </ul>
 *
 * @since 4.0.0
 */

        return getMimeType(extension, "application/octet-stream");
    }

    /**
     * Returns the MIME type for the given file extension with a custom default.
     *
     * @param extension the file extension to look up (without the dot)
     * @param def the default MIME type to return if no mapping is found

            }
            final String indexField = indexOf == 0 ? defaultField : field.substring(0, indexOf);
            final String extensionKey = field.substring(indexOf + 1);
            return new Pair<>(indexField, extensionKey);
        }
    }

      return Validity(
        notBefore = notBefore,
        notAfter = notAfter,
      )
    }

    private fun extensions(): MutableList<Extension> {
      val result = mutableListOf<Extension>()

      if (maxIntermediateCas != -1) {
        result +=
          Extension(
            id = BASIC_CONSTRAINTS,
            critical = true,
            value =
              BasicConstraints(

              ),
            issuerUniqueID = null,
            subjectUniqueID = null,
            extensions =
              listOf(
                Extension(
                  id = keyUsage,
                  critical = true,
                  value = "03020106".decodeHex(),
                ),
                Extension(
                  id = BASIC_CONSTRAINTS,
                  critical = true,
                  value =

        ),
      )
  }

  @Test
  fun multiplePerMessageDeflateHeaders() {
    val extensions =
      WebSocketExtensions.parse(
        headersOf(
          "Sec-WebSocket-Extensions",
          "",
          "Sec-WebSocket-Extensions",
          "permessage-deflate",
        ),
      )
    assertThat(extensions)
      .isEqualTo(
        WebSocketExtensions(
          perMessageDeflate = true,
        ),

To install:

1) chrome://extensions/
2) click "[+] Developer Mode" in top right
3) "Load unpacked extension..."
4) pick $GOROOT/misc/chrome/gophertool

## Code Examples

[Using minio-go library](https://github.com/minio/minio/blob/master/docs/extensions/s3zip/examples/minio-go/main.go)
[Using AWS JS SDK v2](https://github.com/minio/minio/blob/master/docs/extensions/s3zip/examples/aws-js/main.js)
[Using boto3](https://github.com/minio/minio/blob/master/docs/extensions/s3zip/examples/boto3/main.py)

## Requirements and limits

          <models>
            <model>src/main/mdo/core-extensions.mdo</model>
          </models>
          <templates>
            <template>model.vm</template>
          </templates>
          <params>
            <param>locationTracking=true</param>
            <param>generateLocationClasses=true</param>
            <param>packageModelV4=org.apache.maven.api.cli.extensions</param>