code: def assemble_cyjs():
      
      if request.method == 'OPTIONS':
          return {}
      response = request.body.read().decode('utf-8')
      body = json.loads(response)
      stmts_json = body.get('statements')
      stmts = stmts_from_json(stmts_json)
      cja = CyJSAssembler()
      cja.add_statements(stmts)
      cja.make_model(grouping=True)
      model_str = cja.print_cyjs_graph()
      return model_str
docs: Assemble INDRA Statements and return Cytoscape JS network.