Fix documentation
Remove getDataTypes()
Code formatting
Code formatting
Allow locking data definitions
Code formatting
Add example for retrieving data with specific types
Clean up the lifecycle of data handles. This is a huge commit that also
involves the core data management in ARX. Although all tests succeed, it
most probably introduces bugs.
Bugfix: AECS is a decimal
Create statistics for research subsets
Update statistics view
Remove todo
Bugfix: check for null
Code formatting
Bugfix: do not return null from toString()
Implement backwards-compatible deprecated methods
Replace deprecated method calls
Bugfix: fix bugs found with findbugs
Code formatting
Remove comment