at(slotName)
Tries to obtain a value for slot slotName from a local slot of that name,
or tries to load it from the PDB if the local slot does not exist. When all else fails, returns nil.
If slotName begins with an underscore ("_"), returns the id of the slot from PDB instead of the value.
atPut(slotName, value)
Records value in the slot named slotName.
createIfAbsent
Creates a slot with a new PMap clone if not already present.
init
Initialize a new PMap and automatically add it as a persistent object to PDB.
objectsForKeys
Returns a list of values for each key in the list given. Keys beginning with an
underscore ("_") are returned verbatim.
persist
Commits the PMap's slots to PDB.
persistSlots
Cleans up dirty slots by committing them to PDB.
removeAt
Marks a value for removal.
removeSlot
Marks a value for removal.
shouldPersistByDefault
PDB boolean flag indicating whether this object should be considered for persistence
when persistence has not been specifically requested by calling ppid() or PDB addObjectToPersist.
Always true by default for PMap.
slotCount
Returns the number of slots committed to PDB.
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