Imports github.com/antihax/optional github.com/buger/jsonparser github.com/pkg/errors golang.org/x/oauth2 Standard library imports net/http/httputil net/url os path/filepath reflect regexp sort strconv strings time unicode/utf8 bytes context crypto/hmac crypto/sha1 encoding/hex encoding/json encoding/xml errors fmt io io/ioutil log mime/multipart net/http