Removes all Form
XObjects from the page by embedding them into the content.
Most Form XObjects can be embedded in the page with no
difference in page appearance. However Form XObjects such as
transparency groups contain structures which cannot be represented
any other way. These structures are uncommon in most documents but
they do occur.
In this situation you need to decide whether a change in page
appearance is acceptable and that the objects should be forcibly
embedded. The alternative is to skip these objects and embed only
those that will not affect the page appearance.