MakeRestClient is the factory for constructing a RestClient for a given endpoint.

APIVersionV1 suggests that the RestClient would use v1 calls whenever it's available for the given request.

APIVersionV2 suggests that the RestClient would use v2 calls whenever it's available for the given request.

RestClient manages the REST interface for a calling user.

APIVersion is used to define which server side API version would be used when making http requests to the server.

Blob represents arbitrary blob of data satisfying v1.RawResponse interface.

BytesBase64 is a base64-encoded binary blob (i.e., []byte), for use with text encodings like JSON.