Finds the value for the given form field.
If a fuzzy locator is used, the field is found by field name, CSS, and XPath.
php
grabValueFrom('Name');
$name = $I->grabValueFrom('input[name=username]');
$name = $I->grabValueFrom('descendant-or-self::form/descendant::input[@name = 'username']');
$name = $I->grabValueFrom(['name' => 'username']);
?>
See also:
Codeception\Module\WebDriver::grabValueFrom()
