fn update_usages(
ctx: &AssistContext<'_, '_>,
editor: &SyntaxEditor,
data: &StructEditData,
field_names: &FxHashMap<SmolStr, SmolStr>,
)fn update_usages(
ctx: &AssistContext<'_, '_>,
editor: &SyntaxEditor,
data: &StructEditData,
field_names: &FxHashMap<SmolStr, SmolStr>,
)