'Marks that the most recent element of the trace used  a separator.
A separator is an argument you can pass to a Fire CLI to separate args left
of the separator from args right of the separator.
Here\'s an example to demonstrate the separator. Let\'s say you have a
function that takes a variable number of args, and you want to call that
function, and then upper case the result. Here\'s how to do it:
# in Python
def display(arg1, arg2=\'!\'):
return arg1 + arg2
# from Bash (the default separator is the hyphen -)
display hello   # hello!
display hello upper # helloupper
display hello - upper # HELLO!
Note how the separator caused the display function to be called with the
default value for arg2.'

def AddSeparator(self):

    self.elements[(-1)].AddSeparator()
