Fixing type of getActivityHistory() endpoint.
Fixing type of getActivityHistory() endpoint.

DwayneJengSage/BridgeJavaSDK,alxdarksage/BridgeJavaSDK,Sage-Bionetworks/BridgeJavaSDK,Sage-Bionetworks/BridgeJavaSDK,DwayneJengSage/BridgeJavaSDK,alxdarksage/BridgeJavaSDK