code: static int countQuotes(String string, int from, int to) {
          int count = 0;
  
          int escape = 0;
          for (int i = from; i < to; i++) {
              if (string.charAt(i) == '"' && escape % 2 == 0) {
                  count++;
              }
              escape = (string.charAt(i) == '\\') ? escape + 1 : 0;
          }
  
          return count;
      }
docs: /*
  Counts double quotes in string.
  Escaped quotes are ignored.