Provider::fillEfficiencies

public function fillEfficiencies(array $projects): array
{
	$efficiencies = Effective::getAverageEfficiencyForGroups(
		null,
		null,
		0,
		array_keys($projects)
	);

	foreach ($projects as $groupId => $group)
	{
		$projects[$groupId]['EFFICIENCY'] = ($efficiencies[$groupId] ?: 0);
	}

	return $projects;
}