async def METHOD_NAME(self):
    """Verifies the data source API is working by sending a GET request to
    https://<server_ip>/api/investigate/v1/orgs/{org_key}/processes/limits
    Status codes:
    200: successfully fetched the upper and lower time limits (i.e API works)
    400: malformed JSON body or invalid value
    403: forbidden
    500: internal server error
    """
    endpoint = f'api/investigate/v1/orgs/{self.org_key}/processes/limits'
    return await self.client.call_api(endpoint, 'GET', timeout=self.timeout)