code: def diff_string_templates(string_a, string_b):
      
      s1 = string_a.strip().splitlines()
      s2 = string_b.strip().splitlines()
      diffs = unified_diff(s2, s1, fromfile='deployed', tofile='local', lineterm='')
      return '\n'.join(diffs)
docs: Determine the diff of two strings.  Return an empty string if the strings
      are identical, and the diff output string if they are not.