fn build_source_change(
builder: &mut SourceChangeBuilder,
ctx: &AssistContext<'_, '_>,
info_of_record_fields: Vec<RecordFieldInfo>,
assist_info: AssistInfo,
)fn build_source_change(
builder: &mut SourceChangeBuilder,
ctx: &AssistContext<'_, '_>,
info_of_record_fields: Vec<RecordFieldInfo>,
assist_info: AssistInfo,
)