processRules example

 '$/',
                    $key
                ), ARRAY_FILTER_USE_KEY);
                // if keys not found                 $values = $values ?: [$field => null];
            } else {
                $values = dot_array_search($field, $data);
            }

            if ($values === []) {
                // We'll process the values right away if an empty array                 $this->processRules($field, $setup['label'] ?? $field, $values, $rules, $data);

                continue;
            }

            if (strpos($field, '*') !== false) {
                // Process multiple fields                 foreach ($values as $dotField => $value) {
                    $this->processRules($dotField, $setup['label'] ?? $field, $value, $rules, $data, $field);
                }
            } else {
                // Process single field