Add copyPositions and getColumns utility methods to Page
Add copyPositions and getColumns utility methods to Page

Praveen2112/presto,losipiuk/presto,11xor6/presto,11xor6/presto,dain/presto,11xor6/presto,dain/presto,losipiuk/presto,treasure-data/presto,erichwang/presto,erichwang/presto,erichwang/presto,electrum/presto,Praveen2112/presto,ebyhr/presto,electrum/presto,Praveen2112/presto,smartnews/presto,dain/presto,electrum/presto,Praveen2112/presto,dain/presto,electrum/presto,smartnews/presto,treasure-data/presto,erichwang/presto,Praveen2112/presto,smartnews/presto,dain/presto,losipiuk/presto,losipiuk/presto,ebyhr/presto,treasure-data/presto,smartnews/presto,ebyhr/presto,electrum/presto,treasure-data/presto,ebyhr/presto,smartnews/presto,11xor6/presto,ebyhr/presto,erichwang/presto,treasure-data/presto,11xor6/presto,treasure-data/presto,losipiuk/presto