protected function update_customer_data( $id, $data, $customer ) {

		// Customer first name.
		if ( isset( $data['first_name'] ) ) {
			$customer->set_first_name( wc_clean( $data['first_name'] ) );
		}

		// Customer last name.
		if ( isset( $data['last_name'] ) ) {
			$customer->set_last_name( wc_clean( $data['last_name'] ) );
		}

		// Customer billing address.
		if ( isset( $data['billing_address'] ) ) {
			foreach ( $this->get_customer_billing_address() as $field ) {
				if ( isset( $data['billing_address'][ $field ] ) ) {
					if ( is_callable( array( $customer, "set_billing_{$field}" ) ) ) {
						$customer->{"set_billing_{$field}"}( $data['billing_address'][ $field ] );
					} else {
						$customer->update_meta_data( 'billing_' . $field, wc_clean( $data['billing_address'][ $field ] ) );
					}
				}
			}
		}

		// Customer shipping address.
		if ( isset( $data['shipping_address'] ) ) {
			foreach ( $this->get_customer_shipping_address() as $field ) {
				if ( isset( $data['shipping_address'][ $field ] ) ) {
					if ( is_callable( array( $customer, "set_shipping_{$field}" ) ) ) {
						$customer->{"set_shipping_{$field}"}( $data['shipping_address'][ $field ] );
					} else {
						$customer->update_meta_data( 'shipping_' . $field, wc_clean( $data['shipping_address'][ $field ] ) );
					}
				}
			}
		}

		do_action( 'woocommerce_api_update_customer_data', $id, $data, $customer );
	}