class_docstr: Distance transformer from aligner.
  
  Behaviour: uses aligner.get_distance on pairs to obtain distance matrix.
  
  Components
  ----------
  aligner: BaseAligner, must implement get_distance method
      if None, distance is equal zero
docstr: Test parameters for DistFromAligner.
docstr_tok: ["Test","parameters","for","DistFromAligner","."]
code: def get_test_params(cls, parameter_set="default"):
      """Test parameters for DistFromAligner."""
      # importing inside to avoid circular dependencies
      from sktime.alignment.dtw_python import AlignerDTW
      from sktime.utils.validation._dependencies import (
          _check_estimator_deps,
      )
  
      if _check_estimator_deps(AlignerDTW, severity="none"):
          return {"aligner": AlignerDTW()}
      else:
          return {}
  
imports: import numpy
  from sktime.dists_kernels.base import BasePairwiseTransformerPanel
label_desc: Use image node_id 3 for calling the DistFromAligner obj's underlying member method code with example usage: obj.get_test_params(cls, parameter_set) and returns: dict, dict