I20180224-1500
- clean up NullTypeAnnotationTest - introduce a way to ignore warnings from javac Change-Id: I6ea50fb7963bbb257a5051b33dbf2c79cb53a4fd
- clean up NullTypeAnnotationTest - introduce a way to ignore warnings from javac Change-Id: I6ea50fb7963bbb257a5051b33dbf2c79cb53a4fd