How to create a map of Group and GroupMembers apex salesforce - Salesforce Globe For You

 How to create a map of Group and GroupMembers apex salesforce  - Salesforce Globe For You 

Run the following piece of code in anonymous window.

Map<Group,List<GroupMember>> mapGroupGroupMembers = new Map<Group,List<GroupMember>>();

for(Group objGroup : [Select id,name,(select id,UserOrGroupId from GroupMembers) from Group]) {

    List<GroupMember> lstGroupMembers = new List<GroupMember>();

    if(!objGroup.GroupMembers.isEmpty()) {

        for(GroupMember objMember : objGroup.GroupMembers) {

        lstGroupMembers.add(objMember);    

        }

        mapGroupGroupMembers.put(objGroup,lstGroupMembers);

    } else {

        mapGroupGroupMembers.put(objGroup,lstGroupMembers);

    }

}

system.debug('mapGroupGroupMembers:'+mapGroupGroupMembers);

Output: