class_docstr: A class for handling connections and interactions with the CoinBase API.
  
  Attributes:
      api_key (str): API key
      api_secret (str): API secret
      is_connected (bool): Whether or not the API client is connected to CoinBase.
code: def native_query(self, query: str = None) -> Response:
      ast = parse_sql(query, dialect="mindsdb")
      return self.query(ast)
  
imports: import pandas
  from typing import Dict
  import datetime
  import hmac
  import hashlib
  import time
  import requests
  from collections import OrderedDict
  import base64
  from mindsdb.integrations.handlers.coinbase_handler.coinbase_tables import CoinBaseAggregatedTradesTable
  from mindsdb.integrations.libs.api_handler import APIHandler
  from mindsdb.integrations.libs.const import HANDLER_CONNECTION_ARG_TYPE
  from mindsdb.integrations.libs.response import HandlerStatusResponse, HandlerResponse
  from mindsdb_sql import parse_sql
label_desc: Use image node_id 6 for calling the CoinBaseHandler obj's underlying member method code with example usage: obj.native_query(query) and returns: self