<BUG>for (ItemStack input : recipe.getInputs()) {Validate.notNull(input);Validate.notNull(input.getItem());}</BUG><CONTEXT>return;}if (recipeList.contains(recipe)) {return;}<extra_id_0>for (ItemStack output : recipe.getOutputs()) {</CONTEXT>
for (Object input : recipe.getInputs()) {if(input instanceof ItemStack) {Validate.notNull(((ItemStack) input).getItem());