old_contents: # Data retrieval
  from .commands import (find_events, find_event_descriptors,
                         find_beamline_configs, find_run_starts, find_last,
                         find_run_stops)
  # Data insertion
  from .commands import (insert_event, insert_event_descriptor, insert_run_start,
                         insert_beamline_config, insert_run_stop,
                         EventDescriptorIsNoneError, format_events,
                         format_data_keys, db_connect, db_disconnect)
  
  # safe metadatastore objects
  from .document import Document
  
  # object model
  from .odm_templates import (RunStop, RunStart, Event, EventDescriptor,
                              BeamlineConfig, DataKey)
  
new_contents: # Data retrieval
  from .commands import (find_events, find_event_descriptors,
                         find_beamline_configs, find_run_starts, find_last,
                         find_run_stops)
  # Data insertion
  from .commands import (insert_event, insert_event_descriptor, insert_run_start,
                         insert_beamline_config, insert_run_stop,
                         EventDescriptorIsNoneError,
                         format_data_keys, db_connect, db_disconnect)
  
  # safe metadatastore objects
  from .document import Document
  
  # object model
  from .odm_templates import (RunStop, RunStart, Event, EventDescriptor,
                              BeamlineConfig, DataKey)
  
subject: remove removed function from API