if (input[index] < 32 || input[index] > 126) {
                throw exception(String.format("Invalid escape byte 0x%02X", input[index]));
              }
              consume();
              var lexemeString = getLexemeString();
              String escapeSequence = lexemeString.substring(lexemeString.length() - 2);
              lexeme = lexeme.subList(0, lexeme.size() - 2);
              if (!escapeSequences.containsKey(escapeSequence)) {
                throw exception(String.format("Invalid escape sequence '%s'", escapeSequence));
              }
              lexeme.add(escapeSequences.get(escapeSequence));
            } else {