Checkout/calls: tvb_create_order, tvb_verify_payment, tvb_create_plan_order, tvb_verify_plan_payment, tvb_create_appointment_payment, tvb_verify_appointment_payment, tvb_start_call, tvb_update_phone, tvb_get_available_slots, tvb_book_appointment, tvb_cancel_appointment.
Auth: tvb_auth_login_password, tvb_auth_send_otp, tvb_auth_verify_otp, tvb_auth_register.
Admin: tvb_test_twilio, tvb_test_paypal, tvb_test_stripe.
