public static ShareGroupHeartbeatRequest parse(ByteBuffer buffer, short version) {
        return new ShareGroupHeartbeatRequest(new ShareGroupHeartbeatRequestData(
                new ByteBufferAccessor(buffer), version), version);
    }
A member epoch of <code>0</code> means that the member wants to join the group.
clients/src/main/java/org/apache/kafka/common/requests/ShareGroupHeartbeatRequest.java