RTE in own backend module based on Extbase and Fluid
<p>for a complex structure of a domain model (lots of fields and some relations) it´s planned to write an own backend module to be more flexible according to the structure and usability of that module. And there are some dependencies of some fields which I think I cannot make it just via TCA resp. FlexForms. So one thing I hope someone has done that before: If I build an own BE module with extbase and Fluid etc. and have forms with input fields or better textfields: 
How can I add an RTE to such a field? Is that possible? I´ve read the TYPO3 Extbase book, but the example there do not contain a RTE.</p>