GetPrintColumns looks for the open API extension for the display columns.

NewOpenAPIGetter returns an object to return OpenAPIDatas which reads from a server, and then stores in memory for subsequent invocations.

SupportsDryRun is a method that let's us look in the OpenAPI if the specific group-version-kind supports the dryRun query parameter for the PATCH end-point.

Getter is an interface for fetching openapi specs and parsing them into an Resources struct.

Resources interface describe a resources provider, that can give you resource based on group-version-kind.