src/PeskyCMF/Scaffold/Form/FormInput.php
public function enableOptionsFilteringByKeywords($minCharsToInitFiltering = 1) {
        $this->enableOptionsFilteringByKeywords = true;
        $this->minCharsRequiredToInitOptionsFiltering = (int)$minCharsToInitFiltering;
        return $this;
    }
public function enableOptionsFilteringByKeywords($minCharsToInitFiltering = 1) {
        $this->enableOptionsFilteringByKeywords = true;
        $this->minCharsRequiredToInitOptionsFiltering = (int)$minCharsToInitFiltering;
        return $this;
    }
Allows autocomplete functionality (search by keywords) for <select> inputs using options loader
@param int $minCharsToInitFiltering - minimum characters required to initiate ajax request
@return $this