AWSCredentialsProvider Protocol Reference
The AWS credentials provider protocol used to provide credentials to the SDK in order to make calls to the AWS services.
Asynchronously returns a valid AWS credentials or an error object if it cannot retrieve valid credentials. It should cache valid credentials as much as possible and refresh them when they are invalid.
- (AWSTask<AWSCredentials*> *)credentials
A valid AWS credentials or an error object describing the error.
Invalidates the cached temporary AWS credentials. If the credentials provider does not cache temporary credentials, this operation is a no-op.