class AzureBlob::Client

def signed_uri(key, permissions:, expiry:, **options)

- options
- expiry as a UTC iso8601 time string
- A permission string (+"r"+, +"rw"+)
- key (path)
Takes a

Returns an SAS signed URI

def signed_uri(key, permissions:, expiry:, **options)
  uri = generate_uri("#{container}/#{key}")
  uri.query = signer.sas_token(uri, permissions:, expiry:, **options)
  uri
end