Implement smarter media type selection for request content

[fredbi]

Source Location

File: client/runtime.go
Line: 535
Function: func (r *Runtime) Submit(operation *ClientOperation) (any, *http.Response, error)

Context

This is in the request submission logic. Currently it picks the first non-empty media type from operation.ConsumesMediaTypes, falling back to DefaultMediaType.

Analysis

The current selection is simplistic - it just takes the first available. A smarter approach would:

• Consider content negotiation based on what's being sent
• Match producer capabilities with declared media types
• Potentially prefer certain types (e.g., JSON over XML) when multiple are available
• Consider the payload type to pick the most appropriate serialization

Original Comment

// TODO: pick appropriate media type

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This issue was created to track a TODO comment in the codebase.