/**
* Check the properties extension point object.
*
* @param <P> The properties type.
* @param clazz The class type.
* @param id The extension id.
* @param extension The extension attribute.
* @return The properties instance from extension point or default one.
*/
private static <P> Collection<P> checkPropertiesExtensionPoint(
Class<P> clazz, String id, String extension) {
final IConfigurationElement[] nodes =
Platform.getExtensionRegistry().getConfigurationElementsFor(id);
final Collection<P> extensions = new ArrayList<>();
for (final IConfigurationElement node : nodes) {
final String properties = node.getAttribute(extension);
if (properties != null) {
try {
final P provider = UtilEclipse.createClass(properties, clazz);
extensions.add(provider);
} catch (final ReflectiveOperationException exception) {
Verbose.exception(PropertiesPart.class, "checkPropertiesExtensionPoint", exception);
}
}
}
return extensions;
}
