getEnum
Gets the value that is stored in @settings for @key and converts it to the enum value that it represents.
In order to use this function the type of the value must be a string and it must be marked in the schema file as an enumerated type.
It is a programmer error to give a @key that isn't contained in the schema for @settings or is not marked as an enumerated type.
If the value stored in the configuration database is not a valid value for the enumerated type then this function will return the default value.
Return
the enum value
Since
2.26
Parameters
key
the key to get the value for