code: @SuppressWarnings("deprecation")
      @Deprecated
      public DBCursor addSpecial(@Nullable final String name, @Nullable final Object value) {
          if (name == null || value == null) {
              return this;
          }
  
          if ("$comment".equals(name)) {
              comment(value.toString());
          } else if ("$explain".equals(name)) {
              findOptions.getModifiers().put("$explain", true);
          } else if ("$hint".equals(name)) {
              if (value instanceof String) {
                  hint((String) value);
              } else {
                  hint((DBObject) value);
              }
          } else if ("$maxScan".equals(name)) {
              maxScan(((Number) value).intValue());
          } else if ("$maxTimeMS".equals(name)) {
              maxTime(((Number) value).longValue(), MILLISECONDS);
          } else if ("$max".equals(name)) {
              max((DBObject) value);
          } else if ("$min".equals(name)) {
              min((DBObject) value);
          } else if ("$orderby".equals(name)) {
              sort((DBObject) value);
          } else if ("$returnKey".equals(name)) {
              returnKey();
          } else if ("$showDiskLoc".equals(name)) {
              showDiskLoc();
          } else if ("$snapshot".equals(name)) {
              snapshot();
          } else if ("$natural".equals(name)) {
              sort(new BasicDBObject("$natural", ((Number) value).intValue()));
          } else {
              throw new IllegalArgumentException(name + "is not a supported modifier");
          }
          return this;
      }
docs: Adds a special operator like $comment or $returnKey. For example:
  <pre>
  addSpecial("$returnKey", 1)
  addSpecial("$comment", "this is a special query)
  </pre>
  
  @param name  the name of the special query operator
  @param value the value of the special query operator
  @return {@code this} so calls can be chained
  @mongodb.driver.manual reference/operator Special Operators
  @deprecated Prefer per-operator methods, e.g. {@link #comment(String)}, {@link #explain()}, etc.