# Functions
FromJSON rebuilds a Values map from the JSON embedded in an X-RPC-Values header.
ToJSON serializes all of the metadata values into a single JSON string.
Value looks up a single piece of metadata on the specified context.
WithValue stores a key/value pair in the context metadata.
WithValues does a wholesale replacement of ALL metadata values stored on the context.
# Constants
RequestHeader is the custom HTTP header that we use to encode your metadata values as you make RPC calls from service A to service B.
# Type aliases
Values provides a lookup for all of the request-scoped data that you want to follow you as you make RPC calls from service to service (or client to service).