[BUG] example for byte buffer body not rendered properly

[sebarys]

Tapir version: 0.20.2

Scala version: 2.13.8

Describe the bug
for out of type byteBufferBody when I provided example value:

      .out(
        byteBufferBody.example(Example.of(ByteBuffer.wrap(SampleExportContent.getBytes)))
          and header("Content-Type", "text/csv")
      )

generated openapi example is java.nio.HeapByteBuffer[pos=0 lim=2018 cap=2018], not provided, stringified value

      responses:
        '200':
          description: ''
          headers:
            Content-Type:
              required: true
              schema:
                type: string
          content:
            text/csv:
              schema:
                type: string
                format: binary
              example: java.nio.HeapByteBuffer[pos=0 lim=2018 cap=2018]

Additional information

IMO for binary responses only text examples makes sense (are possible to display e.g. in swagger) so maybe we could convert provided example ByteBuffer to string?

[adamw]

@sebarys Would you assume a utf-8 string? or hex?

[sebarys]

I think utf-8 (maybe it could be configurable if you see any use case for hex example in docu)