if (component == null) {
throw new MessagingException("Could not find a component on which to perform the service invocation!");
}
TransformerImpl transformer = context.getTransformer();
PrefixResolver namespaceContext = transformer.getXPathContext().getNamespaceContext();
QName service = getQNameAttribute(namespaceContext, element, "service");
QName interfaceName = getQNameAttribute(namespaceContext, element, "interface");
QName operation = getQNameAttribute(namespaceContext, element, "operation");