Don't serialize Map sinks as support is currently broken in java.
Don't serialize Map sinks as support is currently broken in java.

See issue #1020 for more details.

jacksonic/vjlofvhjfgm,jacksonic/vjlofvhjfgm,foam-framework/foam2,jacksonic/vjlofvhjfgm,foam-framework/foam2,foam-framework/foam2,foam-framework/foam2,foam-framework/foam2