@abc.abstractmethod<EOL><INDENT>def get_site(self, site_id):<DEDENT>
return<EOL>
Gets the ``Site`` specified by its ``Id``.

        In plenary mode, the exact ``Id`` is found or a ``NotFound``
        results. Otherwise, the returned ``Site`` may have a different
        ``Id`` than requested, such as the case where a duplicate ``Id``
        was assigned to a ``Site`` and retained for compatibility.

        :param site_id: ``Id`` of the ``Site``
        :type site_id: ``osid.id.Id``
        :return: the site
        :rtype: ``osid.installation.Site``
        :raise: ``NotFound`` -- ``site_id`` not found
        :raise: ``NullArgument`` -- ``site_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

        *compliance: mandatory -- This method is must be implemented.*