public GroupMembers withMemberUsers(MemberUser... memberUsers) {
        if (this.memberUsers == null) {
            setMemberUsers(new java.util.ArrayList<MemberUser>(memberUsers.length));
        }
        for (MemberUser ele : memberUsers) {
            this.memberUsers.add(ele);
        }
        return this;
    }
<p>
A list of users that belong to a group. For example, a list of interns all belong to the "Interns" group.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setMemberUsers(java.util.Collection)} or {@link #withMemberUsers(java.util.Collection)} if you want to
override the existing values.
</p>

@param memberUsers
       A list of users that belong to a group. For example, a list of interns all belong to the "Interns" group.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-qbusiness/src/main/java/com/amazonaws/services/qbusiness/model/GroupMembers.java