Imports github.com/lionelbarrow/braintree-go/customfields github.com/lionelbarrow/braintree-go/xmlnil github.com/lionelbarrow/braintree-go/date Standard library imports bytes context crypto/tls encoding/base64 errors fmt io io/ioutil log net net/http net/url strconv strings time crypto/hmac encoding/xml unicode compress/gzip crypto/sha1 text/template