parameters: (self, parent_id, node_id)
docstring: Add node into the pipeline tree.
docstring_summary: Add node into the pipeline tree.
docstring_tokens: Add node into the pipeline tree .
function: def addNode(self, parent_id, node_id):
          """
          Add node into the pipeline tree.
          """
          pid = str(parent_id)
          nid = str(node_id)
  
          # Add child
          if pid in self.children_ids:
              self.children_ids[pid].append(nid)
          else:
              self.children_ids[pid] = [nid]
  
          # Add parent
          self.parent_ids[nid] = pid
function_tokens: def addNode ( self , parent_id , node_id ) : pid = str ( parent_id ) nid = str ( node_id ) # Add child if pid in self . children_ids : self . children_ids [ pid ] . append ( nid ) else : self . children_ids [ pid ] = [ nid ] # Add parent self . parent_ids [ nid ] = pid