code: def project(self):
      if self.corpus is None:
          raise Exception("Please run train before project.")
      return self.model.docvecs.vectors_docs[
          [
              self.cartegory2dvid[category]
              for category in self.corpus.get_categories()
          ]
      ]
  
imports: import itertools
  from scattertext.ParsedCorpus import ParsedCorpus
label_desc: Use image node_id 3 for calling the Doc2VecBuilder obj's underlying member method code with example usage: obj.project() and returns: self