code: public static <TItem> Bson ne(final String fieldName, @Nullable final TItem value) {
          return new OperatorFilter<TItem>("$ne", fieldName, value);
      }
docs: Creates a filter that matches all documents where the value of the field name does not equal the specified value.
  
  @param fieldName the field name
  @param value     the value, which may be null
  @param <TItem>   the value type
  @return the filter
  @mongodb.driver.manual reference/operator/query/ne $ne