A TypedKey is a key that can be used to get and set values in a TypedMap or any object with typed keys. This class uses reference equality for comparisons, so each new instance is different key.
Type parameters
A
The type of values associated with this key.
Value parameters
displayName
The name to display for this key or null if no display name has been provided. This name is only used for debugging. Keys with the same name are not considered to be equal.