{ url }, _contextLoader);
RegistryBuilder builder = new RegistryBuilder(_extraLoader);
builder.add(TapestryModule.class);
SymbolProvider provider = new SingleKeySymbolProvider(
InternalConstants.TAPESTRY_ALIAS_MODE_SYMBOL, "servlet");
ContributionDef contribution = new SyntheticSymbolSourceContributionDef("AliasMode",
provider, "before:ApplicationDefaults");
ModuleDef module = new SyntheticModuleDef(contribution);