code: def __call__(self, tensor: Tensor):
      return self.new_tensor([tensor], tensor.shape, order=tensor.order)
  
file_path: mars/mars/tensor/rechunk/rechunk.py
imports: import numpy
  from ...None import opcodes
  from ...serialization.serializables import AnyField
  from ...utils import has_unknown_shape
  from ..core import Tensor
  from ..datasource import tensor
  from ..operands import TensorOperand, TensorOperandMixin
  from ..utils import calc_sliced_size
  from .core import chunk_size_type, get_nsplits, gen_rechunk_infos
label_desc: Use image node_id 1 for calling the TensorRechunk obj's underlying member method code with example usage: obj.__call__(tensor) and returns: self