Getting root context in Global Function

Extension developer can get root context “dse_contextRootData” in server side global function.

Procedure

For example, in the global function implementation class:
public static Boolean contains_1(Object dse_contextRootData, String param1) {
		KeyedCollection rootData=(KeyedCollection)dse_contextRootData; 
		System.out.println("### context's  root keyedCollection:\n"+rootData);
		int index=-1;
		index=rootData.getIndexOf(param1);
		if(index>=0){
			return true;
		}else{
			return false;
		}
	}