note that conversion doesn't guarantee a deepcopy

[DirectXMan12]

The conversion interface currently doesn't say anything about deepcopy vs no deepcopy. We should take a position on this.

cc @droot

/kind documentation

[mengqiy]

The Convertible interface requires it to be a runtime.Object which implies it implements DeepCopyObject() Object. Did I miss anything?

type Convertible interface {
	runtime.Object
	ConvertTo(dst Hub) error
	ConvertFrom(src Hub) error
}

[droot]

@DirectXMan12 can you elaborate more on deepcopy vs no deepcopy ?

[DirectXMan12]

Right, but we don't specify if ConvertTo and ConvertFrom need to call DeepCopy themselves. Can ConvertTo and ConvertFrom safely re-use pointers to data from the source object? Is it expected that anyone who calls deepcopy doesn't care what becomes of source (this is true for conversion webhooks, but we should add a note).

TL;DR: in Rust terminology, does ConvertTo take an immutable reference to self, or does it consume self?

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[DirectXMan12]

/remove-lifecycle stale
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[vincepri]

/help

Need to mostly add documentation.