code: public boolean isCrossPartitionQuery(@NonNull List<String> partitionKeys) {
          if (partitionKeys.isEmpty()) {
              return true;
          }
  
          return partitionKeys.stream().filter(this::isCrossPartitionQuery)
                  .findFirst()
                  .map(p -> true)
                  .orElse(hasKeywordOr());
      }
docs: Indicate if DocumentQuery should enable cross partition query.
  
  @param partitionKeys The list of partitionKey names.
  @return