class_docstr: A stream operator that copies the values of a given stream.
class_docstr_tok: ["A","stream","operator","that","copies","the","values","of","a","given","stream","."]
code: def forward(self) -> T:
      return self.inputs[0].value
  
imports: from typing import Callable, TypeVar
  import numpy
  from tensortrade.feed.core.base import Stream, T
label_desc: Use image node_id 2 for calling the Copy obj's underlying member method code with example usage: obj.forward() and returns: self