/**
* Register a requirement
*
* @param Requirement $requirement The requirement to add
*
* @return RequirementSet
*/
public function add(Requirement $requirement)
{
$merged = false;
foreach ($this->requirements as $knownRequirement) {
if ($knownRequirement instanceof Requirement && $requirement->equals($knownRequirement)) {
$knownRequirement->setOptional($requirement->isOptional());
foreach ($requirement->getDescriptions() as $description) {
$knownRequirement->addDescription($description);
}
$merged = true;
break;
}
}
if (!$merged) {
$this->requirements[] = $requirement;
}
return $this;
}
