code: private void escapeValueTo(final String field, final StringBuilder target) {
          if (field == null) {
              target.append(DETAILS_QUOTE_CHAR);
              target.append(DETAILS_QUOTE_CHAR);
              return;
          }
          target.append(DETAILS_QUOTE_CHAR);
          if (field.indexOf(DETAILS_ESCAPE_CHAR) == -1 && field.indexOf(DETAILS_QUOTE_CHAR) == -1) {
              target.append(field);
          } else {
              final int len = field.length();
              for (int i = 0; i < len; i++) {
                  final char charAt = field.charAt(i);
                  if (charAt == DETAILS_ESCAPE_CHAR || charAt == DETAILS_QUOTE_CHAR) {
                      target.append(DETAILS_ESCAPE_CHAR);
                  }
                  target.append(charAt);
              }
          }
          target.append(DETAILS_QUOTE_CHAR);
      }
docs: Escapes value for a CSV line and appends it to the 'target'.