class_docstr: Calculate ewm window bounds (the entire window)
class_docstr_tok: ["Calculate","ewm","window","bounds","(","the","entire","window",")"]
code: def get_window_bounds(
      self,
      num_values: int = 0,
      min_periods: int | None = None,
      center: bool | None = None,
      closed: str | None = None,
      step: int | None = None,
  ) -> tuple[np.ndarray, np.ndarray]:
      return np.array([0], dtype=np.int64), np.array(
          [num_values], dtype=np.int64
      )
  
imports: from __future__ import annotations
  from datetime import timedelta
  import numpy
  from pandas._libs.window.indexers import calculate_variable_window_bounds
  from pandas.util._decorators import Appender
  from pandas.core.dtypes.common import ensure_platform_int
  from pandas.tseries.offsets import Nano
label_desc: Use image node_id 1 for calling the ExponentialMovingWindowIndexer obj's underlying member method code with example usage: obj.get_window_bounds(num_values, min_periods, center, closed, step) and returns: np,  np