# Functions
NewApplicationDefault returns "Application Default Credentials".
NewComputeEngine constructs the PerRPCCredentials that fetches access tokens from Google Compute Engine (GCE)'s metadata server.
NewJWTAccessFromFile creates PerRPCCredentials from the given keyFile.
NewJWTAccessFromKey creates PerRPCCredentials from the given jsonKey.
NewOauthAccess constructs the PerRPCCredentials using a given token.
NewServiceAccountFromFile constructs the PerRPCCredentials using the JSON key file of a Google Developers service account.
NewServiceAccountFromKey constructs the PerRPCCredentials using the JSON key slice from a Google Developers service account.
# Structs
TokenSource supplies PerRPCCredentials from an oauth2.TokenSource.