NewAdaptor creates a XDS based adaptor.

ErrFeatureNotSupportedYet means a non-supported feature exists in the xDS resource so the Adaptor goes ahead.

ErrRequireFurtherEDS means the translation of Cluster is not complete since it depends on EDS to fetch the load assignment (endpoints).

TranslateOptions contains some options to customize the translate process.

Adaptor translates xDS resources like Route, Cluster to the equivalent configs in Apache APISIX.