<name>roles</name>
          <version>3.0.0+</version>
          <description>
            The roles the contributor plays in the project. Each role is described by a
            {@code role} element, the body of which is a role name. This can also be used to
            describe the contribution.
          </description>
          <association>
            <type>String</type>
            <multiplicity>*</multiplicity>