Graph.java: clarifying the requirements around node/edge objects. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=112082354
Graph.java: clarifying the requirements around node/edge objects.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=112082354

google/guava,berndhopp/guava,google/guava,DavesMan/guava,typetools/guava,EdwardLee03/guava,mosoft521/guava,Xaerxess/guava,tli2/guava,xasx/guava,DavesMan/guava,Xaerxess/guava,rgoldberg/guava,tli2/guava,typetools/guava,EdwardLee03/guava,mosoft521/guava,xasx/guava,rgoldberg/guava,mosoft521/guava,berndhopp/guava,jakubmalek/guava,google/guava,jakubmalek/guava