Method orElseGet

src/main/java/net/minecraftforge/fml/OptionalMod.java:198–200

Return the mod object if present, otherwise invoke other and return the result of that invocation. @param other a Supplier whose result is returned if no mod object is present @return the mod object if present otherwise the result of other.get() @throws NullPointerException

(Supplier<? extends T> other)

     * null
     */
    public T orElseGet(Supplier<? extends T> other) {
        return getValue() != null ? getValue() : other.get();
    }

    /**
     * Return the contained mod object, if present, otherwise throw an exception