code: @Deprecated
    public static Tag create(TagKey key, TagValue value) {
      return create(key, value, METADATA_UNLIMITED_PROPAGATION);
    }
docs: Creates a {@code Tag} from the given key and value.
  
  <p>For backwards-compatibility this method still produces propagating {@link Tag}s.
  
  <p>This is equivalent to calling {@code create(key, value,
  TagMetadata.create(TagTtl.UNLIMITED_PROPAGATION))}.
  
  @param key the tag key.
  @param value the tag value.
  @return a {@code Tag} with the given key and value.
  @since 0.8
  @deprecated in favor of {@link #create(TagKey, TagValue, TagMetadata)}.