public boolean isInternable() {
    return (classAnnotations != null)
        && (fieldAnnotations == null)
        && (methodAnnotations == null)
        && (parameterAnnotations == null);
  }
Returns whether this item is a candidate for interning. The only interning candidates are ones
that <i>only</i> have a non-null set of class annotations, with no other lists.

@return {@code true} if this is an interning candidate, or {@code false} if not
android/android_framework/dex-maker/src/main/java/com/android/dx/dex/file/AnnotationsDirectoryItem.java