public GroupMembershipExistenceResult withGroupId(String groupId) {
        setGroupId(groupId);
        return this;
    }
<p>
The identifier for a group in the identity store.
</p>

@param groupId
       The identifier for a group in the identity store.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-identitystore/src/main/java/com/amazonaws/services/identitystore/model/GroupMembershipExistenceResult.java