code: def quantile(self, level):
      return self.quantile_internal(level, dim=0)
  
file_path: gluonts/src/gluonts/nursery/robust-mts-attack/pts/distributions/piecewise_linear.py
imports: import torch
  import torch.nn.functional
  from torch.distributions import constraints, NegativeBinomial, Poisson, Distribution, TransformedDistribution, AffineTransform
  from torch.distributions.utils import broadcast_all, lazy_property
  from .utils import broadcast_shape
label_desc: Use image node_id 4 for calling the PiecewiseLinear obj's underlying member method code with example usage: obj.quantile(level) and returns: self