code: TextOutline transform(AffineTransform nextTransform) {
          final AffineTransform combinedTransform = new AffineTransform();
          combinedTransform.concatenate(nextTransform);
          combinedTransform.concatenate(transform);
          return new TextOutline(text, glyphs, outline, combinedTransform);
      }
docs: Add a transformation to the outline.
  
  @param nextTransform new transformation
  @return new text outline