code: def get_columns(self):
      return [
          "sid",
          "date_created",
          "date_updated",
          "phone_number",
          "friendly_name",
          "account_sid",
          "capabilities",
          "number_status",
          "api_version",
          "voice_url",
          "sms_url",
          "uri",
      ]
  
imports: import os
  import re
  from twilio.rest import Client
  import pandas
  from mindsdb.integrations.libs.api_handler import APIHandler, APITable
  from mindsdb.integrations.libs.response import HandlerStatusResponse, HandlerResponse, RESPONSE_TYPE
  from mindsdb.utilities.config import Config
  from mindsdb.utilities import log
  from mindsdb.integrations.utilities.date_utils import parse_local_date
  from mindsdb.integrations.utilities.sql_utils import extract_comparison_conditions, project_dataframe, filter_dataframe
  from mindsdb_sql.parser import ast
label_desc: Use image node_id 2 for calling the PhoneNumbersTable obj's underlying member method code with example usage: obj.get_columns() and returns: list