def indentBlock(block):
            cursor = cursorAtSpaceEnd(block)
            cursor.insertText(' ' if withSpace else self.text())
def gradients(self, d_grads, g_grads):
      if self.d_grads is None:
          self.d_grads = [torch.zeros_like(_g) for _g in d_grads]
          self.g_grads = [torch.zeros_like(_g) for _g in g_grads]