code: public static Link fromSpanContext(SpanContext context, Type type) {
      return new AutoValue_Link(context.getTraceId(), context.getSpanId(), type, EMPTY_ATTRIBUTES);
    }
docs: Returns a new {@code Link}.
  
  @param context the context of the linked {@code Span}.
  @param type the type of the relationship with the linked {@code Span}.
  @return a new {@code Link}.
  @since 0.5