code: def copy_v(g, x):
      r"""Generalized SDDMM function that copies destination node features to edges.
  
      Parameters
      ----------
      g : DGLGraph
          The input graph.
      x : tensor
          The destination node features.
  
      Returns
      -------
      tensor
          The result tensor.
  
      Notes
      -----
      This function supports autograd (computing input gradients given the output gradient).
      """
      return gsddmm(g, "copy_rhs", None, x)
  
file_path: dgl/python/dgl/ops/sddmm.py
imports: import sys
  from itertools import product
  from ..None import backend
  from ..backend import gsddmm, gsddmm_hetero
label_desc: Use image node_id 6 for calling a global function with example usage: copy_v(g, x) and returns: gsddmm