Optionalcontents?: ConfigContentsThe contents that are used with @{link ConfigFile.readSync} and @{link ConfigFile.read}. If retrieveContents is set, it will use that instead of @{link ConfigFile.read} but NOT @{link ConfigFile.readSync}. This will also contain the new config when @{link ConfigFile.write} or @{link ConfigFile.writeSync} is called. This will persist through config instances, such as Alias.update and Alias.fetch.
OptionalreadreadFn A function that controls all aspect of ConfigFile.read. For example, it won't set the contents unless explicitly done. Only use this if you know what you are doing. Use retrieveContents instead.
OptionalretrieveA function to conditionally read based on the config instance. The this value will be the config instance.
OptionalwriteA function that controls all aspects of ConfigFile.write. For example, it won't read the contents unless explicitly done. Only use this if you know what you are doing. Use updateContents instead.
Optionalcontents: AnyJson
Different hooks into ConfigFile used for testing instead of doing file IO.