sip.js: Additional tests for updated/added methods
sip.js: Additional tests for updated/added methods

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