Converts id of the desktop to Desktop structure. Returns None if there
is no desktop with the given id.
Converts id of the monitor to Monitor structure. Returns None if there
is no monitor with the given id.
Converts id of the node to Node structure. Returns None if there
is no node with the given id.
Returns ids of the desktops, that match certain criteria
Returns ids of monitors, that match certain criteria
Returns ids of the nodes, that match certain criteria
Returnes tree representation of the matching item
Subscribe to the given events