code: def get_seq_number_from_id(id, id_template, prefix, **kw):
      
      separator = kw.get("separator", "-")
      postfix = id.replace(prefix, "").strip(separator)
      postfix_segments = postfix.split(separator)
      seq_number = 0
      possible_seq_nums = filter(lambda n: n.isalnum(), postfix_segments)
      if possible_seq_nums:
          seq_number = possible_seq_nums[-1]
  
      # Check if this id has to be expressed as an alphanumeric number
      seq_number = get_alpha_or_number(seq_number, id_template)
      seq_number = to_int(seq_number)
      return seq_number
docs: Return the sequence number of the given ID