class_docstr: Credentials Class Unittest class.
docstr: Test Credentials.load() called twice.
code: def test_Credentials_load_twice(self):
      """Test Credentials.load() called twice."""
      c = Credentials.get_current()
      c.activation = _Activation("some_email", True)
      with patch("streamlit.runtime.credentials.LOGGER") as p:
          c.load()
          p.error.assert_called_once_with(
              "Credentials already loaded. Not rereading file."
          )
  
imports: import os
  import textwrap
  import unittest
  from pathlib import Path
  from unittest.mock import MagicMock, call, mock_open, patch
  import pytest
  import requests_mock
  from testfixtures import tempdir
  from streamlit import file_util
  from streamlit.runtime.credentials import Credentials, _Activation, _verify_email, email_prompt
label_desc: Use image node_id 8 for calling the CredentialsClassTest obj's underlying member method code with example usage: obj.test_Credentials_load_twice() without return types