<field>
          <name>downloadUrl</name>
          <version>4.0.0+</version>
          <description>
            The URL of the project's download page. If not given users will be
            referred to the homepage given by {@code url}.
            This is given to assist in locating artifacts that are not in the repository due to
            licensing restrictions.
          </description>

        /**
         * Returns the algorithm name, usually used as key, never {@code null} value. The name is a standard name of
         * algorithm (if applicable) or any other designator that is algorithm commonly referred with. Example: "SHA-1".
         */
        @Nonnull
        String getName();

        /**
         * Returns the file extension to be used for given checksum file (without leading dot), never {@code null}. The

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