great many more than three.'

  `Your hair wants cutting,' said the Hatter.  He had been
looking at Alice for some time with great curiosity, and this was
his first speech.

  `You should learn not to make personal remarks,' Alice said
with some severity; `it's very rude.'

  The Hatter opened his eyes very wide on hearing this; but all
he SAID was, `Why is a raven like a writing-desk?'

                It can contain several fields.

                * `name`: (`str`) The name of the contact person/organization.
                * `url`: (`str`) A URL pointing to the contact information. MUST be in
                    the format of a URL.
                * `email`: (`str`) The email address of the contact person/organization.
                    MUST be in the format of an email address.

            <multiplicity>*</multiplicity>
          </association>
        </field>
      </fields>
    </class>
    <class>
      <name>Contributor</name>
      <description>Description of a person who has contributed to the project, but who does not have
        commit privileges. Usually, these contributions come in the form of patches submitted.</description>
      <version>3.0.0+</version>
      <fields>