class_docstr: A multi-stream operator for aggregating multiple streams into a single stream.
  
  Parameters
  ----------
  func : `Callable[[List[Stream]], T]`
      A function for aggregating the value of multiple streams.
class_docstr_tok: ["A","multi-stream","operator","for","aggregating","multiple","streams","into","a","single","stream",".","Parameters","--","--","--","--","--","func",":","`","Callable","[","[","List","[","Stream","]","]",",","T","]","`","A","function","for","aggregating","the","value","of","multiple","streams","."]
code: def has_next(self) -> bool:
      return True
  
file_path: tensortrade/tensortrade/feed/api/generic/reduce.py
imports: from typing import List, Callable
  import numpy
  from tensortrade.feed.core.base import Stream, T
label_desc: Use image node_id 3 for calling the Aggregate obj's underlying member method code with example usage: obj.has_next() and returns: True