URL is the private address for accessing the schema. This is not guaranteed to be publicly accessible and
could be a non-HTTP protocol (i.e. gs:// or s3://)
Type denotes the type of schema the corresponding App is backed by. Currently the only supported value is
"openapi", but other types such as "soap", "graphql" and "grpc" are on the roadmap.
Version denotes the version of the schema specification. This property is contextual based on the schema
type, for example openapi schemas will contain the OpenAPI specification version (currently only 3.0.x is
supported), but grpc APIs could be "proto2" or "proto3".
