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","."]
docstr: Connect to a ChromaDB database.
docstr_tok: ["Connect","to","a","ChromaDB","database","."]
code: def connect(self):
      """Connect to a ChromaDB database."""
      if self.is_connected is True:
          return self._client
  
      try:
          self._client = self._get_client()
          self.is_connected = True
          return self._client
      except Exception as e:
          self.is_connected = False
          raise Exception(f"Error connecting to ChromaDB client, {e}!")
  
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 5 for calling the ChromaDBHandler obj's underlying member method code with example usage: obj.connect() and returns: self, self