Cache stream responses

[kerwanp]

Describe the feature

Current behavior

When a stream is used in a cachedEventHandler the cached body is the serialized stream and not the result of this stream.
Resulting in an undesired behavior as the response sent when taken from the cache is the serialized stream.

Desired behavior

When a cachedEventHandler returns a stream, the stream should be return and the response of the stream should be cached as the body.

Additional information

• Would you be willing to help implement this feature?