class_docstr: Converts mesh faces :obj:`[3, num_faces]` to edge indices
  :obj:`[2, num_edges]` (functional name: :obj:`face_to_edge`).
  
  Args:
      remove_faces (bool, optional): If set to :obj:`False`, the face tensor
          will not be removed.
code: def __init__(self, remove_faces: bool = True) -> None:
      self.remove_faces = remove_faces
  
file_path: pytorch_geometric/torch_geometric/transforms/face_to_edge.py
imports: import torch
  from torch_geometric.data import Data
  from torch_geometric.data.datapipes import functional_transform
  from torch_geometric.transforms import BaseTransform
  from torch_geometric.utils import to_undirected
label_desc: Use image node_id 1 to create a new FaceToEdge object from inherited base classes: BaseTransform with example: obj = FaceToEdge(remove_faces)