             }
         }
 
-        @inlinable
+        @inlinable // This is @inlinable as a trivial initializer.
         init(capacity: Int) {
             if capacity == 0 {
                 self = .empty

            }
        }

        @inlinable
        mutating func append(contentsOf buffer: UnsafeRawBufferPointer) {
            switch self {
            case .empty:

            }
        }

        @inlinable // This is @inlinable as trivially forwarding.
        var startIndex: Int {
            switch self {
            case .empty: return 0
