Returns an asset's formula.
string $name An asset name:
array The formula
\InvalidArgumentException If there is no formula by that name
public function getFormula($name) {
if (!$this->loaded) {
$this
->load();
}
if (!isset($this->formulae[$name])) {
throw new \InvalidArgumentException(sprintf('There is no "%s" formula.', $name));
}
return $this->formulae[$name];
}