(def gzip-profile
  {wrap-output-stream (fn [^OutputStream os] (-> os ->gzip-os ->os-writer))
   content-encoding gzip-content-encoding
   write! (->write-with-temp-buffer!)})

(def gzip-profile
  {wrap-output-stream (fn[^OutputStream os]
                        (-> os
                            (->gzip-os 1024)
                            ->os-writer))
   content-encoding gzip-content-encoding
   write! (->write-with-temp-buffer! 4096)})

Namespace containing the shared code for each adapter.

It contains helpers for working with [[OutputStreams]] and assembling SSE
sending function using several strategies and managing exceptions in the
adapters.

The main concept here is what we call "write profiles". A write profile is
a map of 4 keys:
- [[wrap-output-stream]]
- [[write!]]
- [[content-encoding]]
- [[custom-flush]]

With these 4 keys we can control buffering aspects of our SSE connection and
compression functionality and flushing specific behavior.

Here is an example profile which uses gzip and temporary buffers to
concatenate SSE event text:

```clojure
(def gzip-profile
  {wrap-output-stream (fn [^OutputStream os] (-> os ->gzip-os ->os-writer))
   content-encoding gzip-content-encoding
   write! (->write-with-temp-buffer!)})
```

The `wrap-output-stream` function will use a [[GZIPOutputStream]] and an
[[OutputStreamWriter]] constructed with the [[->gzip-os]] and [[->os-writer]]
helpers.

To go with this we use a `write!` function constructed with
[[->write-with-temp-buffer!]].

If we wanted specific buffer sizes we could do:

```clojure
(def gzip-profile
  {wrap-output-stream (fn[^OutputStream os]
                        (-> os
                            (->gzip-os 1024)
                            ->os-writer))
   content-encoding gzip-content-encoding
   write! (->write-with-temp-buffer! 4096)})
```

The output stream wrapping helpers are:
- [[->gzip-os]]
- [[->os-writer]]
- [[->buffered-writer]]

The write function helper to go with them are:
- [[->write-with-temp-buffer!]]
- [[write-to-buffered-writer!]]

See the rest of the docstrings for more details.

Utilities providing a test SSEGenerator and a mock `->sse-response`
function.