remove() public method

Remove the byte at the current iterator position and moves the iterator to the previous character.
public remove ( ) : string
return string
 public function testApiRemove_ThrowsException_OnInvalidIterator()
 {
     $this->setExpectedException(OutOfBoundsException::class);
     for ($this->iterator->rewind(); $this->iterator->valid(); $this->iterator->next()) {
     }
     $this->iterator->remove();
 }