How to pass an access token into ApiContext?

[sergeyMarkov]

Referencing to https://developer.paypal.com/docs/api/get-an-access-token-curl/ PayPal advices to re-use the access token until it expires and then get/generate a new token.

To reduce the number of requests (especially during the high load on the website) I would like to implement the usage of access token, but there are no examples how to implement it.

In other words -- $apiContext is usually generated based on the creation of new OAuthTokenCredential() object

$apiContext = new \PayPal\Rest\ApiContext(
  new \PayPal\Auth\OAuthTokenCredential(
    'YOUR APPLICATION CLIENT ID',
    'YOUR APPLICATION CLIENT SECRET'
  )
);

Question - How to create $apiContext having already pre-generated access token?