class_docstr: A stream operator for warming up a given stream.
  
  Parameters
  ----------
  periods : int
      Number of periods to warm up.
code: def has_next(self) -> bool:
      return True
  
file_path: tensortrade/tensortrade/feed/api/generic/warmup.py
imports: import numpy
  from tensortrade.feed.core.base import Stream, T
label_desc: Use image node_id 3 for calling the WarmUp obj's underlying member method code with example usage: obj.has_next() and returns: True