# Functions
GCEInstanceInfo fetches VM metadata used for attestation from the GCE Metadata API.
NewRESTClient creates a new RESTClient.
TrustedKeyGetter returns a function that queries the GCE API for a shieldedVM's public signing key.
# Structs
A MetadataClient fetches metadata from the GCE Metadata API.
RESTClient is a client for the GCE API.
# Interfaces
CVMRestClient is the interface a GCP REST client for a CVM must implement.