code: def dtypes(self):
      field_name_list = self.get_field_name_list()
      dtype_dict = dict()
      for name in field_name_list:
          block_id = self.loc_block(name, with_offset=False)
          dtype_dict[name] = self._block_manager.blocks[block_id].dtype
  
      return pd.Series(dtype_dict)
  
imports: import numpy
  from .schema_manager import SchemaManager
  from .block_manager import BlockManager
  from .block_manager import BlockType
  import pandas
  from ..entity import types
  from typing import Union, List, Tuple
  from ..conf.default_config import DATAFRAME_BLOCK_ROW_SIZE
label_desc: Use image node_id 6 for calling the DataManager obj's underlying member method code with example usage: obj.dtypes() and returns: pd