Throttling is the action through which MSAL blocks applications from making repeated bad requests to the server. This works by MSAL detecting certain conditions when the server returns an error. If a similar request is then issued under the same condition, the same server error is returned by MSAL, without contacting the server. Throttling occurs in the following conditions: After receiving an RetryAfter headerAfter receiving 429, 5xx HTTP status. This class manages the throttling providers and is itself a provider