class_docstr: A constraint disallowing the modification of words which are past some
  maximum sentence word-length limit.
class_docstr_tok: ["A","constraint","disallowing","the","modification","of","words","which","are","past","some","maximum","sentence","word-length","limit","."]
docstr: Returns the word indices in current_text which are able to be
  deleted.
docstr_tok: ["Returns","the","word","indices","in","current_text","which","are","able","to","be","deleted","."]
code: def _get_modifiable_indices(self, current_text):
      """Returns the word indices in current_text which are able to be
      deleted."""
      return set(range(min(self.max_length, len(current_text.words))))
  
imports: from textattack.constraints import PreTransformationConstraint
label_desc: Use image node_id 2 for calling the MaxWordIndexModification obj's underlying member method code with example usage: obj._get_modifiable_indices(current_text) and returns: set