class_docstr: This handler handles connection and execution of the ChromaDB statements.
class_docstr_tok: ["This","handler","handles","connection","and","execution","of","the","ChromaDB","statements","."]
code: def get_columns(self, table_name: str) -> HandlerResponse:
      # check if collection exists
      try:
          _ = self._client.get_collection(table_name)
      except ValueError:
          return Response(
              resp_type=RESPONSE_TYPE.ERROR,
              error_message=f"Table {table_name} does not exist!",
          )
      return super().get_columns(table_name)
  
imports: import sys
  from collections import OrderedDict
  from typing import List, Optional
  import pandas
  from mindsdb.integrations.handlers.chromadb_handler.settings import ChromaHandlerConfig
  from mindsdb.integrations.libs.const import HANDLER_CONNECTION_ARG_TYPE
  from mindsdb.integrations.libs.response import RESPONSE_TYPE
  from mindsdb.integrations.libs.response import HandlerResponse
  from mindsdb.integrations.libs.response import HandlerResponse
  from mindsdb.integrations.libs.response import HandlerStatusResponse
  from mindsdb.integrations.libs.vectordatabase_handler import FilterCondition, FilterOperator, TableField, VectorStoreHandler
  from mindsdb.interfaces.storage.model_fs import HandlerStorage
  from mindsdb.utilities import log
label_desc: Use image node_id 18 for calling the ChromaDBHandler obj's underlying member method code with example usage: obj.get_columns(table_name) and returns: super, Response