private void addAllTestRecords() {
    addSomeRecordsWithIssuer();
    addSomeRecordsWithNullIssuer();
  }
Note: caller should carefully determine the expected value of {@code isGoogleAccount}, which
is affected by multiple factors.

@param isGoogleAccount is a {@code boolean}, not a {@link Boolean}
javatests/com/google/android/apps/authenticator/otp/AccountDbTest.java