code: def b(self):
      return self._b
  
file_path: mars/mars/tensor/linalg/dot.py
imports: from ...None import opcodes
  from ...serialization.serializables import KeyField
  from ..core import Tensor, TensorOrder
  from ..operands import TensorOperand, TensorOperandMixin
  from ..datasource import tensor
  from ..array_utils import device, as_same_device, is_sparse_module
  from .tensordot import tensordot
label_desc: Use image node_id 2 for calling the TensorDot obj's underlying member method code with example usage: obj.b() and returns: self