docs: public INDArray inferVector(LabelledDocument document, double learningRate, double minLearningRate,
                      int iterations) {
          if (document.getReferencedContent() != null && !document.getReferencedContent().isEmpty()) {
              return inferVector(document.getReferencedContent(), learningRate, minLearningRate, iterations);
          } else
              return inferVector(document.getContent(), learningRate, minLearningRate, iterations);
      }