Fix Scala type issues.
Fix Scala type issues.

mathemage/h2o-3,datachand/h2o-3,mrgloom/h2o-3,h2oai/h2o-3,jangorecki/h2o-3,pchmieli/h2o-3,h2oai/h2o-3,datachand/h2o-3,mathemage/h2o-3,printedheart/h2o-3,madmax983/h2o-3,weaver-viii/h2o-3,mrgloom/h2o-3,datachand/h2o-3,jangorecki/h2o-3,michalkurka/h2o-3,bospetersen/h2o-3,ChristosChristofidis/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,nilbody/h2o-3,madmax983/h2o-3,PawarPawan/h2o-v3,YzPaul3/h2o-3,bospetersen/h2o-3,junwucs/h2o-3,bospetersen/h2o-3,nilbody/h2o-3,kyoren/https-github.com-h2oai-h2o-3,brightchen/h2o-3,h2oai/h2o-dev,junwucs/h2o-3,PawarPawan/h2o-v3,datachand/h2o-3,mathemage/h2o-3,weaver-viii/h2o-3,madmax983/h2o-3,jangorecki/h2o-3,weaver-viii/h2o-3,nilbody/h2o-3,madmax983/h2o-3,pchmieli/h2o-3,printedheart/h2o-3,printedheart/h2o-3,spennihana/h2o-3,ChristosChristofidis/h2o-3,weaver-viii/h2o-3,kyoren/https-github.com-h2oai-h2o-3,brightchen/h2o-3,pchmieli/h2o-3,brightchen/h2o-3,h2oai/h2o-dev,mrgloom/h2o-3,mathemage/h2o-3,junwucs/h2o-3,mrgloom/h2o-3,h2oai/h2o-3,kyoren/https-github.com-h2oai-h2o-3,tarasane/h2o-3,junwucs/h2o-3,datachand/h2o-3,h2oai/h2o-3,PawarPawan/h2o-v3,mrgloom/h2o-3,weaver-viii/h2o-3,pchmieli/h2o-3,datachand/h2o-3,ChristosChristofidis/h2o-3,spennihana/h2o-3,junwucs/h2o-3,bikash/h2o-dev,madmax983/h2o-3,printedheart/h2o-3,bikash/h2o-dev,michalkurka/h2o-3,pchmieli/h2o-3,YzPaul3/h2o-3,nilbody/h2o-3,nilbody/h2o-3,h2oai/h2o-dev,YzPaul3/h2o-3,madmax983/h2o-3,kyoren/https-github.com-h2oai-h2o-3,bikash/h2o-dev,bospetersen/h2o-3,ChristosChristofidis/h2o-3,jangorecki/h2o-3,h2oai/h2o-dev,bikash/h2o-dev,YzPaul3/h2o-3,bikash/h2o-dev,jangorecki/h2o-3,tarasane/h2o-3,bikash/h2o-dev,kyoren/https-github.com-h2oai-h2o-3,bospetersen/h2o-3,spennihana/h2o-3,YzPaul3/h2o-3,printedheart/h2o-3,ChristosChristofidis/h2o-3,kyoren/https-github.com-h2oai-h2o-3,jangorecki/h2o-3,pchmieli/h2o-3,junwucs/h2o-3,YzPaul3/h2o-3,PawarPawan/h2o-v3,YzPaul3/h2o-3,h2oai/h2o-3,mathemage/h2o-3,brightchen/h2o-3,weaver-viii/h2o-3,datachand/h2o-3,mrgloom/h2o-3,spennihana/h2o-3,printedheart/h2o-3,tarasane/h2o-3,h2oai/h2o-3,PawarPawan/h2o-v3,kyoren/https-github.com-h2oai-h2o-3,tarasane/h2o-3,ChristosChristofidis/h2o-3,nilbody/h2o-3,michalkurka/h2o-3,nilbody/h2o-3,printedheart/h2o-3,weaver-viii/h2o-3,h2oai/h2o-dev,mrgloom/h2o-3,tarasane/h2o-3,michalkurka/h2o-3,tarasane/h2o-3,madmax983/h2o-3,h2oai/h2o-dev,bospetersen/h2o-3,michalkurka/h2o-3,junwucs/h2o-3,spennihana/h2o-3,pchmieli/h2o-3,michalkurka/h2o-3,brightchen/h2o-3,ChristosChristofidis/h2o-3,spennihana/h2o-3,tarasane/h2o-3,PawarPawan/h2o-v3,jangorecki/h2o-3,mathemage/h2o-3,brightchen/h2o-3,bospetersen/h2o-3,mathemage/h2o-3,brightchen/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,PawarPawan/h2o-v3,h2oai/h2o-3