code: def test_simple(self):
      embedding = TSNE().fit(self.x)
      self.eval_embedding(embedding, self.y)
      new_embedding = embedding.transform(self.x)
      self.eval_embedding(new_embedding, self.y, "transform")
  
imports: import unittest
  from functools import partial
  import numpy
  from scipy.spatial.distance import pdist, squareform, cdist
  from sklearn import datasets
  from sklearn.metrics import accuracy_score
  from sklearn.neighbors import KNeighborsClassifier, NearestNeighbors
  import openTSNE
  from openTSNE import affinity, initialization, nearest_neighbors, TSNEEmbedding
label_desc: Use image node_id 1 for calling the TestUsageSimple obj's underlying member method code with example usage: obj.test_simple() without return types