class_docstr: A base dataset settings class for labels schema management
  
  Args:
      label_schema: The label's schema for the dataset
class_docstr_tok: ["A","base","dataset","settings","class","for","labels","schema","management","Args",":","label_schema",":","The","label","'s","schema","for","the","dataset"]
code: def _get_unique_labels(self) -> List[str]:
      unique_labels = []
      for label in self.label_schema:
          if label not in unique_labels:
              unique_labels.append(label)
      return unique_labels
  
imports: import math
  import warnings
  from dataclasses import dataclass
  from datetime import datetime
  from typing import Any, Dict, Iterable, List, Optional, Set, Tuple, Union
  from argilla.client.apis import AbstractApi, api_compatibility
  from argilla.client.sdk.commons.errors import AlreadyExistsApiError, ApiCompatibilityError, ForbiddenApiError, NotFoundApiError
  from argilla.client.sdk.datasets.api import get_dataset
  from argilla.client.sdk.datasets.models import TaskType
  from argilla.pydantic_v1 import BaseModel, Field
label_desc: Use image node_id 2 for calling the LabelsSchemaSettings obj's underlying member method code with example usage: obj._get_unique_labels() and returns: unique_labels