public static Annotation makeSourceDebugExtension(CstString smapString) {
    Annotation result = new Annotation(SOURCE_DEBUG_EXTENSION_TYPE, SYSTEM);

    result.put(new NameValuePair(VALUE_STRING, smapString));
    result.setImmutable();
    return result;
  }
Constructs a standard {@code SourceDebugExtension} annotation.

@param smapString {@code non-null;} the SMAP string associated with
@return {@code non-null;} the annotation
android/android_framework/dex-maker/src/main/java/com/android/dx/dex/file/AnnotationUtils.java