@Override
            public boolean equals(Object o) {
                if (this == o) return true;
                if (o == null || getClass() != o.getClass()) return false;
                MemberAssignmentData that = (MemberAssignmentData) o;
                return memberId.equals(that.memberId);
            }
Constructs a MemberAssignmentData with the given member Id.

@param memberId The Id of the member.
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/assignor/UniformHeterogeneousAssignmentBuilder.java