return crc32.NewIEEE()
	case c.Is(ChecksumCRC32C):
		return crc32.New(crc32.MakeTable(crc32.Castagnoli))
	case c.Is(ChecksumSHA1):
		return sha1.New()
	case c.Is(ChecksumSHA256):
		return sha256.New()
	case c.Is(ChecksumCRC64NVME):
		return crc64.New(crc64Table)
	}
	return nil
}

// Trailing return whether the checksum is trailing.
func (c ChecksumType) Trailing() bool {

        return map.keySet().iterator();
    }

    /**
     * Returns the number of elements in this set (its cardinality).
     *
     * @return the number of elements in this set (its cardinality).
     */
    @Override
    public int size() {
        return map.size();
    }

    /**
     * Returns true if this set contains no elements.
     *
     * @return true if this set contains no elements.

        if (extension == null) {
            return path;
        }
        final String ext = "." + extension;
        if (path.endsWith(ext)) {
            return path;
        }
        return path.replace('.', '/') + ext;
    }

    /**
     * Returns the resource path.
     *
     * @param clazz
     *            The class. Must not be {@literal null}.
     * @return The resource path.
     */

		return authTypeStreamingUnsignedTrailer
	} else if isRequestSignatureV4(r) {
		return authTypeSigned
	} else if isRequestPresignedSignatureV4(r) {
		return authTypePresigned
	} else if isRequestJWT(r) {
		return authTypeJWT
	} else if isRequestPostPolicySignatureV4(r) {
		return authTypePostPolicy
	} else if _, ok := r.Form[xhttp.Action]; ok {
		return authTypeSTS
	} else if _, ok := r.Header[xhttp.Authorization]; !ok {

     *            the substring to find
     * @return true if the string contains the substring, false otherwise
     */
    public static boolean contains(final String s1, final String s2) {
        if (isEmpty(s1)) {
            return false;
        }
        return s1.indexOf(s2) >= 0;
    }

    /**
     * Returns whether two strings are equal. If both are null, returns <code>true</code>.
     *
     * @param target1

		if err := tag.Validate(); err != nil {
			return err
		}
	}

	for _, meta := range ef.Metadata {
		if err := meta.Validate(); err != nil {
			return err
		}
	}
	if err := ef.Purge.Validate(); err != nil {
		return err
	}
	if err := ef.Size.Validate(); err != nil {
		return err
	}
	if ef.CreatedBefore != nil && !ef.CreatedBefore.Before(time.Now()) {
		return BatchJobYamlErr{
			line: ef.line,

          return null
        }

        if (retryAfter(userResponse, Integer.MAX_VALUE) == 0) {
          // specifically received an instruction to retry without delay.
          return userResponse.request
        }

        return null
      }

      HTTP_MISDIRECTED_REQUEST -> {

            while (urlpath.charAt(i) != '/') {
                i--;
            }
            return urlpath.substring(i + 1);
        }
        if (shr != null) {
            return shr + '/';
        }
        if (this.url.getHost().length() > 0) {
            return this.url.getHost() + '/';
        }
        return "smb://";
    }

    /**
     * {@inheritDoc}
     *

    }

    public String getInceptionYear() {
        return getModel().getInceptionYear();
    }

    public void setUrl(String url) {
        getModel().setUrl(url);
    }

    public String getUrl() {
        return getModel().getUrl();
    }

    public Prerequisites getPrerequisites() {
        return getModel().getPrerequisites();
    }

        }

        /**
         * @return URL
         */
        public URL getURL() {
            return url_;
        }

        /**
         * @param url
         */
        public void setURL(final URL url) {
            url_ = url;
        }

        /**
         * @return Returns the cal.
         */
        public Calendar getCal() {