src/Element.php
public function getElementsByClassName(string $names):HTMLCollection {
		$namesArray = explode(" ", $names);
		$dots = "." . implode(".", $namesArray);

		return $this->css($dots);
	}
public function getElementsByClassName(string $names):HTMLCollection {
		$namesArray = explode(" ", $names);
		$dots = "." . implode(".", $namesArray);

		return $this->css($dots);
	}
Returns a live HTMLCollection containing all child elements which have all
of the given class names. When called on the document object, the complete
document is searched, including the root node.
@param string $names a string representing the list of class names to
match; class names are separated by whitespace
@return HTMLCollection