GetScopeByName.
        [Preview API]
        :param str scope_name:
        :rtype: :class:`<IdentityScope> <azure.devops.v5_0.identity.models.IdentityScope>`

def get_scope_by_name(self, scope_name):
        """GetScopeByName.
        [Preview API]
        :param str scope_name:
        :rtype: :class:`<IdentityScope> <azure.devops.v5_0.identity.models.IdentityScope>`
        """
        query_parameters = {}
        if scope_name is not None:
            query_parameters['scopeName'] = self._serialize.query('scope_name', scope_name, 'str')
        response = self._send(http_method='GET',
                              location_id='4e11e2bf-1e79-4eb5-8f34-a6337bd0de38',
                              version='5.0-preview.2',
                              query_parameters=query_parameters)
        return self._deserialize('IdentityScope', response)