This node takes an input list and change its length by inserting an arbitrary number of the input element.
The Length input define the length of the output list, if the input list
length was smaller than that number, then the input Element will be added
till the length matches that of Length input. For instance, [1,2] as input
list with Length equal to 5 and Element as 11, the output list will be
[1,2,11,11,11], notice how 11 was added several times to form a list of
length 5.
If the input list was larger than Length input then nothing happens to the list. Moreover, an empty input list would output a list of length input Length that is filled with the input Element, that’s why the node is called Fill.