https://docs.aws.amazon.com/sdk-for-cpp/latest/api/aws-cpp-sdk-core/html/class_aws_1_1_auth_1_1_a_w_s_bearer_token_provider_base.html
AWS SDK for C++: Aws::Auth::AWSBearerTokenProviderBase Class Reference
Aws::Auth::AWSBearerTokenProviderBase Class Reference - AWS SDK for C++ v1
for cawssdkauthclass