same(proto:)

The proto (text format) name and the JSON name are the same string.

case same(proto: StaticString)

Mangled symbol

s13SwiftProtobuf8_NameMapV0C11DescriptionO4sameyAEs12StaticStringV_tcAEmFWhat are these?

FNV24: [4Z2AO]

Other cases

case standard(proto: StaticString)
The JSON name can be computed from the proto string
case unique(proto: StaticString, json: StaticString)
The JSON and text format names are just different.
case aliased(proto: StaticString, aliases: [StaticString])
Used for enum cases only to represent a value’s primary proto name (the first defined case) and its aliases. The JSON and text format names for enums are always the same.