b/21187932 Made it an opaque class, since there is no need for a user to inspect its fields after creation. Change-Id: I9101afdecc5e25bb484d060be2a08c470faa92e5
b/21187932 Made it an opaque class, since there is no need for a user to inspect its fields after creation. Change-Id: I9101afdecc5e25bb484d060be2a08c470faa92e5