Form/Builder.php
private function getDefaults(Form $formEntity, $locale)
    {
        // set Defaults
        $defaults = [];

        foreach ($formEntity->getFields() as $field) {
            $fieldTranslation = $field->getTranslation($locale);

            if ($fieldTranslation && $fieldTranslation->getDefaultValue()) {
                $value = $this->formFieldTypePool->get($field->getType())->getDefaultValue($field, $locale);
                $defaults[$field->getKey()] = $value;
            }
        }

        return $defaults;
    }
private function getDefaults(Form $formEntity, $locale)
    {
        // set Defaults
        $defaults = [];

        foreach ($formEntity->getFields() as $field) {
            $fieldTranslation = $field->getTranslation($locale);

            if ($fieldTranslation && $fieldTranslation->getDefaultValue()) {
                $value = $this->formFieldTypePool->get($field->getType())->getDefaultValue($field, $locale);
                $defaults[$field->getKey()] = $value;
            }
        }

        return $defaults;
    }
Get defaults.

@param Form $formEntity
@param string $locale

@return array