code: @Deprecated
    public MeasureMap putAttachment(String key, String value) {
      return putAttachment(key, AttachmentValueString.create(value));
    }
docs: Associate the contextual information of an {@code Exemplar} to this {@link MeasureMap}.
  Contextual information is represented as {@code String} key-value pairs.
  
  <p>If this method is called multiple times with the same key, only the last value will be kept.
  
  @param key the key of contextual information of an {@code Exemplar}.
  @param value the string representation of contextual information of an {@code Exemplar}.
  @return this
  @since 0.16
  @deprecated in favor of {@link #putAttachment(String, AttachmentValue)}.