def StrSuffixOf(suffix, input_string):
return re.match(r'<STR_LIT>' + suffix.value + '<STR_LIT:$>', input_string.value) is not None<EOL>
Return True if the concrete value of the input_string ends with suffix
otherwise false.

:param suffix: suffix we want to check
:param input_string: the string we want to check

:return : True if the input_string ends with suffix else false