@kotlin.Metadata
public final class A {
    private final field sb: java.lang.StringBuilder
    public method <init>(): void
    public final @org.jetbrains.annotations.NotNull method foo(): java.lang.String
    public final method unaryPlus(@org.jetbrains.annotations.NotNull p0: java.lang.String): void
}

@kotlin.Metadata
public final class Kt1953_classKt {
    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
}