code: def __call__(self, tensor):
      return self.new_tensor(
          [tensor],
          shape=tensor.shape,
          dtype=tensor.dtype,
          order=tensor.order,
      )
  
file_path: mars/mars/tensor/base/core.py
imports: from ...serialization.serializables import KeyField
  from ..operands import TensorOperand, TensorOperandMixin
label_desc: Use image node_id 3 for calling the TensorDeviceConversionBase obj's underlying member method code with example usage: obj.__call__(tensor) and returns: self