These should not be used in app code; instead, we will add
class-file retention versions of these to the support
library.
Change-Id: I13275bd28529f5da04d923688655be35c77dbb1c
This changeset adds some annotations for recording whether a
method return value or method parameter can be null (@Nullable),
can never be null (@NotNull), or must be an integer enum or flag
using one of the given constants.
Change-Id: Ic932592ea3bac781c1df364447c57042461333c5