in src/main/java/org/apache/sling/scripting/sightly/render/RenderUnit.java [147:156]
public Object get(Object key) {
if (!(key instanceof String)) {
throw new ClassCastException("key should be a String");
}
String mappedKey = keyMappings.get(((String) key).toLowerCase());
if (mappedKey != null) {
return wrapped.get(mappedKey);
}
return null;
}