_:nab643035443d4413b724a93a619ac89fxb2
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://gitlab.mpcdf.mpg.de/ift/nifty/-/commits/0a9153e111d1b8c3f1f660650fc125d964987f08/nifty2go/plotting/descriptors>