if (extHolder!=null)
{
List exts = extHolder.getInterfaceExtensionsFor(sImpl.getFullJavaName());
for (int i = 0; i < exts.size(); i++)
{
InterfaceExtension ext = (InterfaceExtension) exts.get(i);
int methodCount = ext.getInterfaceMethodCount();
for (int j=0; j<methodCount; j++)
{
String methodName = ext.getInterfaceMethodName(j);
for (int k = 0; k < PREFIXES.length; k++)
{
String prefix = PREFIXES[k];
if (methodName.startsWith(prefix))
usedPropNames.add(methodName.substring(prefix.length()));