woocommerce / woocommerce-gateway-stripe

			if ( ( $user_id && $this->saved_cards && $maybe_saved_card && 'reusable' === $source_object->usage ) || $force_save_source ) {

				$response = $customer->add_source( $source_object->id );

				if ( ! empty( $response->error ) ) {

					throw new WC_Stripe_Exception( print_r( $response, true ), $this->get_localized_error_message_from_response( $response ) );

				}

			}

		} elseif ( $this->is_using_saved_payment_method() ) {

			// Use an existing token, and then process the payment.

			if ( ( $user_id && $this->saved_cards && $maybe_saved_card ) || $force_save_source ) {

				$response = $customer->add_source( $stripe_token );

				if ( ! empty( $response->error ) ) {

					throw new WC_Stripe_Exception( print_r( $response, true ), $response->error->message );

				}

				$source_id    = $response;

			} else {

				$source_id    = $stripe_token;

		$args     = $this->generate_customer_request( $args );

		$response = WC_Stripe_API::request( apply_filters( 'wc_stripe_create_customer_args', $args ), 'customers' );

		if ( ! empty( $response->error ) ) {

			throw new WC_Stripe_Exception( print_r( $response, true ), $response->error->message );

		}

		$this->set_id( $response->id );

		$this->clear_cache();