private function removeFunctionCall(Tokens $tokens, $callNSIndex, $callIndex, $openIndex, $closeIndex)
{
$tokens->clearTokenAndMergeSurroundingWhitespace($callIndex);
if (false !== $callNSIndex) {
$tokens->clearTokenAndMergeSurroundingWhitespace($callNSIndex);
}
$tokens->clearTokenAndMergeSurroundingWhitespace($openIndex);
$tokens->clearTokenAndMergeSurroundingWhitespace($closeIndex);
}