Refactoring and further quality improvement on nexus/nxdl_utils code #206
Description
Currently pynxtools via core nexus utility functions within nexus.py make use of nxdl_utils.py from nexus_definitions. There are aspects of these two set of library functionalities that are worth a refactoring:
- [ ] Refactor the current use of a mixture of etree and lxml to use lxml throughout
- [ ] Refactor to assure that type checking of function argument and return values in called and calling functions
See related issue FAIRmat-NFDI/pynxtools#302