merge method
Creates a copy of this WxTileStyle but with the given fields replaced with the new values.
Implementation
WxTileStyle merge(WxTileStyle? other) {
  // if null return current object
  if (other == null) return this;
  return copyWith(
    direction: other.direction,
    margin: other.margin,
    spacing: other.spacing,
    adaptiveSpacing: other.adaptiveSpacing,
    align: other.align,
    justify: other.justify,
    inline: other.inline,
    childWrap: other.childWrap,
  );
}