for(String serverGroup : serverGroups) {
DefaultOperationRequestBuilder builder = new DefaultOperationRequestBuilder();
ModelNode request;
try {
builder.setOperationName("read-children-names");
builder.addNode("server-group", serverGroup);
builder.addProperty("child-type", "deployment");
request = builder.buildRequest();
} catch (OperationFormatException e) {
throw new IllegalStateException("Failed to build operation", e);
}