code: def mask_reshape_knn_idx(x, matches_self_idx):
      return x[~matches_self_idx].view(x.shape[0], -1)
  
imports: import numpy
  import torch
  from ..distances import BatchedDistance, CosineSimilarity
  from .None import common_functions
label_desc: Use image node_id 6 for calling a global function with example usage: mask_reshape_knn_idx(x, matches__idx) and returns: x