assume_role_with_web_identity
                        Assume Role with AWS Web Identity
canonical_request       Construct a Canonical Request
locate_credentials      Locate AWS Credentials
read_credentials        Use Credentials from .aws/credentials File
signature_v2_auth       Signature Version 2
signature_v4            Signature Version 4
signature_v4_auth       Signature Version 4
string_to_sign          Construct a String To Sign
