docstr: Get transformed spec warnings
  
  :return: A list of warnings as dictionaries. Each warning dict has a 'type'
     key indicating the warning type, and a 'message' key containing
     a description of the warning. Potential warning types include:
      'RowLimitExceeded': Some datasets in resulting Vega specification
          have been truncated to the provided row limit
      'BrokenInteractivity': Some interactive features may have been
          broken in the resulting Vega specification
      'Unsupported': No transforms in the provided Vega specification were
          eligible for pre-transforming
code: def get_warnings(self) -> List[PreTransformWarning]:
      """Get transformed spec warnings
  
      :return: A list of warnings as dictionaries. Each warning dict has a 'type'
         key indicating the warning type, and a 'message' key containing
         a description of the warning. Potential warning types include:
          'RowLimitExceeded': Some datasets in resulting Vega specification
              have been truncated to the provided row limit
          'BrokenInteractivity': Some interactive features may have been
              broken in the resulting Vega specification
          'Unsupported': No transforms in the provided Vega specification were
              eligible for pre-transforming
      """
      return self._chart_state.get_warnings()
  
imports: import pandas
  import psutil
  import pyarrow
  from typing import Union
  from .connection import SqlConnection
  from .dataset import SqlDataset, DataFrameDataset
  from .datasource import PandasDatasource, DfiDatasource
  from .evaluation import get_mark_group_for_scope
  from .transformer import import_pyarrow_interchange, to_arrow_table
  from .local_tz import get_local_tz
  from typing import TypedDict, List, Literal, Any
label_desc: Use image node_id 5 for calling the ChartState obj's underlying member method code with example usage: obj.get_warnings() and returns: self