code: def by_solve_triangular(self):
      return self._by_solve_triangular
  
imports: import numpy
  from numpy.linalg import LinAlgError
  from ...serialization.serializables import KeyField, BoolField
  from ...None import opcodes
  from ...core import recursive_tile
  from ...utils import has_unknown_shape
  from ..operands import TensorHasInput, TensorOperand, TensorOperandMixin
  from ..datasource import tensor
  from ..core import TensorOrder
  from ..array_utils import as_same_device, device
label_desc: Use image node_id 2 for calling the TensorCholeskyFuse obj's underlying member method code with example usage: obj.by_solve_triangular() and returns: self