class_docstr: Output layer for doc regression models. Currently only supports Mean Squared Error
  loss.
  
  Args:
      loss (MSELoss): config for MSE loss
      squash_to_unit_range (bool): whether to clamp the output to the range [0, 1],
          via a sigmoid.
code: def torchscript_predictions(self):
      return RegressionScores(self.squash_to_unit_range)
  
imports: from typing import Any, Dict, List, Optional, Tuple, Union
  import torch
  from pytext.config.component import create_loss
  from pytext.loss import MAELoss, MSELoss
  from pytext.utils.usage import log_class_usage
  from .output_layer_base import OutputLayerBase
label_desc: Use image node_id 5 for calling the RegressionOutputLayer obj's underlying member method code with example usage: obj.torchscript_predictions() and returns: RegressionScores