Imports github.com/Ingenico-ePayments/connect-sdk-go/communicator/communication github.com/Ingenico-ePayments/connect-sdk-go/errors github.com/Ingenico-ePayments/connect-sdk-go/logging github.com/Ingenico-ePayments/connect-sdk-go/logging/obfuscation Standard library imports bytes crypto/hmac crypto/rand crypto/sha256 crypto/tls encoding/base64 encoding/json errors fmt io io/ioutil mime/multipart net net/http net/textproto net/url regexp sort strings time