src/Mask/Mask.php
private function maybeAppendWithKey(string $key, array &$result, array $values): void
    {
        if ([] !== $values) {
            $result[$key] = $values;
        }
    }
private function maybeAppendWithKey(string $key, array &$result, array $values): void
    {
        if ([] !== $values) {
            $result[$key] = $values;
        }
    }
private function maybeAppendWithKey ( string $ key , array & $ result , array $ values ) : void { if ( [ ] !== $ values ) { $ result [ $ key ] = $ values ; } }
append values to result if not empty
@param string $key
@param array $result
@param array $values
append values to result if not empty