class_docstr: A stream that groups together other streams into a dictionary.
class_docstr_tok: ["A","stream","that","groups","together","other","streams","into","a","dictionary","."]
code: def __getitem__(self, name) -> "Stream[T]":
      return self.streams[name]
  
imports: import inspect
  from abc import abstractmethod
  from typing import Generic, Iterable, TypeVar, Dict, Any, Callable, List, Tuple
  from tensortrade.core import Observable
  from tensortrade.feed.core.accessors import CachedAccessor
  from tensortrade.feed.core.mixins import DataTypeMixin
label_desc: Use image node_id 4 for calling the Group obj's underlying member method code with example usage: obj.__getitem__(name) and returns: self