requestProto.getServiceName(), requestProto.getMethod());
if (contents instanceof ConcurrentModificationException) {
ConcurrentModificationException serverSide = (ConcurrentModificationException) contents;
ConcurrentModificationException clientSide =
new ConcurrentModificationException(serverSide.getMessage());
clientSide.initCause(serverSide);
throw clientSide;
} else if (contents instanceof IllegalArgumentException) {
IllegalArgumentException serverSide = (IllegalArgumentException) contents;
throw new IllegalArgumentException(serverSide.getMessage(), serverSide);
} else if (contents instanceof RuntimeException) {