GetTenant.
        [Preview API]
        :param str tenant_id:
        :rtype: :class:`<TenantInfo> <azure.devops.v5_0.identity.models.TenantInfo>`

def get_tenant(self, tenant_id):
        """GetTenant.
        [Preview API]
        :param str tenant_id:
        :rtype: :class:`<TenantInfo> <azure.devops.v5_0.identity.models.TenantInfo>`
        """
        route_values = {}
        if tenant_id is not None:
            route_values['tenantId'] = self._serialize.url('tenant_id', tenant_id, 'str')
        response = self._send(http_method='GET',
                              location_id='5f0a1723-2e2c-4c31-8cae-002d01bdd592',
                              version='5.0-preview.1',
                              route_values=route_values)
        return self._deserialize('TenantInfo', response)