WP_Site_Health::perform_test

	 *
	 * @param callable $callback
	 * @return mixed|void
	 */
	private function perform_test( $callback ) {
		/**
		 * Filter the output of a finished Site Health test.
		 *
		 * @since 5.3.0
		 *
		 * @param array $test_result {
		 *     An associative array of test result data.
		 *
		 *     @type string $label       A label describing the test, and is used as a header in the output.
		 *     @type string $status      The status of the test, which can be a value of `good`, `recommended` or `critical`.
		 *     @type array  $badge {
		 *         Tests are put into categories which have an associated badge shown, these can be modified and assigned here.
		 *
		 *         @type string $label The test label, for example `Performance`.
		 *         @type string $color Default `blue`. A string representing a color to use for the label.
		 *     }
		 *     @type string $description A more descriptive explanation of what the test looks for, and why it is important for the end user.
		 *     @type string $actions     An action to direct the user to where they can resolve the issue, if one exists.
		 *     @type string $test        The name of the test being ran, used as a reference point.