class_docstr: Universal Transformation sample.
  
  Universe Transformation is not a subtask of NLP,
  implemented for providing universal text transformation function.
docstr: Validate whether the sample is legal
  
  :return: bool
code: def is_legal(self):
      r"""
      Validate whether the sample is legal
  
      :return: bool
  
      """
      return True
  
file_path: textflint/textflint/input/component/sample/ut_sample.py
imports: from .sample import Sample
  from ..field import TextField
label_desc: Use image node_id 6 for calling the UTSample obj's underlying member method code with example usage: obj.is_legal() and returns: True