public void populateStore()
{
for (int i = 0; i < possibleUpgrades.Length; i++)
{
GameObject obj = Instantiate(upgradeItemPrefab, upgradeParent);
obj.name = possibleUpgrades[i].upgradeName;
UpgradeContainer uc = obj.GetComponent <UpgradeContainer>();
uc.configurePrefab(possibleUpgrades[i]);
uc.getBuyButton().onClick.AddListener(delegate { buyUpgrade(uc.currentUpgrade, uc); });
}
}