ENG-4653: Code review fix.  Use generics correctly for the win.
ENG-4653: Code review fix.  Use generics correctly for the win.

zuowang/voltdb,wolffcm/voltdb,deerwalk/voltdb,flybird119/voltdb,flybird119/voltdb,migue/voltdb,wolffcm/voltdb,paulmartel/voltdb,deerwalk/voltdb,VoltDB/voltdb,migue/voltdb,flybird119/voltdb,simonzhangsm/voltdb,migue/voltdb,ingted/voltdb,ingted/voltdb,paulmartel/voltdb,migue/voltdb,paulmartel/voltdb,creative-quant/voltdb,ingted/voltdb,wolffcm/voltdb,flybird119/voltdb,creative-quant/voltdb,kumarrus/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,paulmartel/voltdb,kumarrus/voltdb,flybird119/voltdb,VoltDB/voltdb,VoltDB/voltdb,deerwalk/voltdb,wolffcm/voltdb,migue/voltdb,VoltDB/voltdb,flybird119/voltdb,creative-quant/voltdb,kumarrus/voltdb,VoltDB/voltdb,ingted/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,zuowang/voltdb,kumarrus/voltdb,simonzhangsm/voltdb,migue/voltdb,wolffcm/voltdb,paulmartel/voltdb,wolffcm/voltdb,simonzhangsm/voltdb,ingted/voltdb,zuowang/voltdb,deerwalk/voltdb,zuowang/voltdb,deerwalk/voltdb,ingted/voltdb,flybird119/voltdb,zuowang/voltdb,zuowang/voltdb,kumarrus/voltdb,migue/voltdb,kumarrus/voltdb,deerwalk/voltdb,kumarrus/voltdb,ingted/voltdb,wolffcm/voltdb,kumarrus/voltdb,deerwalk/voltdb,paulmartel/voltdb,simonzhangsm/voltdb,creative-quant/voltdb,paulmartel/voltdb,migue/voltdb,simonzhangsm/voltdb,creative-quant/voltdb,creative-quant/voltdb,wolffcm/voltdb,paulmartel/voltdb,deerwalk/voltdb,zuowang/voltdb,creative-quant/voltdb,creative-quant/voltdb,zuowang/voltdb,simonzhangsm/voltdb,ingted/voltdb,flybird119/voltdb