added callback type for improved consistency
added callback type for improved consistency

aciccarello/DefinitelyTyped,AgentME/DefinitelyTyped,johan-gorter/DefinitelyTyped,benliddicott/DefinitelyTyped,mcrawshaw/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,AgentME/DefinitelyTyped,johan-gorter/DefinitelyTyped,rolandzwaga/DefinitelyTyped,nycdotnet/DefinitelyTyped,isman-usoh/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,arusakov/DefinitelyTyped,amir-arad/DefinitelyTyped,magny/DefinitelyTyped,zuzusik/DefinitelyTyped,benishouga/DefinitelyTyped,markogresak/DefinitelyTyped,YousefED/DefinitelyTyped,magny/DefinitelyTyped,jimthedev/DefinitelyTyped,arusakov/DefinitelyTyped,YousefED/DefinitelyTyped,borisyankov/DefinitelyTyped,GiedriusGrabauskas/DefinitelyTyped,georgemarshall/DefinitelyTyped,rolandzwaga/DefinitelyTyped,alexdresko/DefinitelyTyped,QuatroCode/DefinitelyTyped,jimthedev/DefinitelyTyped,minodisk/DefinitelyTyped,minodisk/DefinitelyTyped,abbasmhd/DefinitelyTyped,abbasmhd/DefinitelyTyped,mcrawshaw/DefinitelyTyped,jimthedev/DefinitelyTyped,GiedriusGrabauskas/DefinitelyTyped,one-pieces/DefinitelyTyped,zuzusik/DefinitelyTyped,mcliment/DefinitelyTyped,zuzusik/DefinitelyTyped,aciccarello/DefinitelyTyped,alexdresko/DefinitelyTyped,dsebastien/DefinitelyTyped,benishouga/DefinitelyTyped,ashwinr/DefinitelyTyped,borisyankov/DefinitelyTyped,arusakov/DefinitelyTyped,smrq/DefinitelyTyped,nycdotnet/DefinitelyTyped,benishouga/DefinitelyTyped,isman-usoh/DefinitelyTyped,aciccarello/DefinitelyTyped,AgentME/DefinitelyTyped,smrq/DefinitelyTyped,dsebastien/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,chrootsu/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,QuatroCode/DefinitelyTyped,chrootsu/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,ashwinr/DefinitelyTyped