Search interface. Handles operations to save and get back searches on the server.
Examples
>>> interface.search.save(name='mysearch',
row='xnat:subjectData',
columns=['xnat:subjectData/PROJECT','xnat:subjectData/SUBJECT_ID'],
constraints=[('xnat:subjectData/SUBJECT_ID', 'LIKE', '*'), 'AND'],
sharing='public'
)