How can we create Pega Service REST and associated properties referring(consuming) a Swagger(YAML)? I know we can generate OpenAPI/swagger for an existing Service, i.e. once Service Package is created already.

But my query is whether any approach in Pega allows to create Service REST by consuming a Swagger?

This is in context of OpenAPI TMF 622 specification, where Pega is supposed to expose a REST Service as per TMF 622 specification(for which we have the swagger).