Multi spaces delimiter in split transformation behaves as "double spaces" delimiter.

e.g.
When I have a source message from AMQ

{"test":"test1  test2  test3"}

the output is correctly split to

[[[{"test":"test1"}, {"test":"test2"}, {"test":"test3"}]]] 

But when the message contains three spaces

{"test":"test1   test2   test3"}

the output is split around two spaces, and one space is still left in the output strings

[[[{"test":"test1"}, {"test":" test2"}, {"test":" test3"}]]] 

When the message contains four spaces

{"test":"test1    test2    test3"}

the output is split around two spaces, so empty values will be created

[[[{"test":"test1"}, {"test":""}, {"test":"test2"}, {"test":""}, {"test":"test3"}]]]