Class com.google.common.base.Optional

Added Methods
Optional<T> fromJavaUtil(Optional<T>)	Returns the equivalent {@code com.google.common.base.Optional} value to the given {@code java.util.Optional}, or {@code null} if the argument is null.
Optional<T> toJavaUtil()	Returns the equivalent {@code java.util.Optional} value to this optional.
Optional<T> toJavaUtil(Optional<T>)	Returns the equivalent {@code java.util.Optional} value to the given {@code com.google.common.base.Optional}, or {@code null} if the argument is null.