set Default Repeated Handler
@CanIgnoreReturnValue()
Sets a handler for any unknown repeated keys which allows values to be processed via a generic Iterator. To handle repeated values against a known key with their expected type, register a handler via addRepeatedHandler.
Note that if a repeated key is associated with an individual value handler (i.e. via addHandler), then that will be used in preference to the default handler set here.
Return
the builder instance for chaining.
Parameters
default Handler
the default handler for unknown repeated keys/values.