in tiles-request-velocity/src/main/java/org/apache/tiles/request/velocity/autotag/VelocityAutotagRuntime.java [73:83]
public <T> T getParameter(String name, Class<T> type, T defaultValue) {
if (params == null) {
ASTMap astMap = (ASTMap) node.jjtGetChild(0);
params = (Map<String, Object>) astMap.value(context);
}
T result = (T) params.get(name);
if (result == null) {
result = defaultValue;
}
return result;
}