Add java factories for Message.attributes/localAttributes to improve usability.
Add java factories for Message.attributes/localAttributes to improve usability.

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