in src/main/java/org/apache/sling/scripting/sightly/java/compiler/impl/GlobalShadowChecker.java [70:76]
private void checkVariable(String variableName) {
variableName = variableName.toLowerCase();
if (globals.containsKey(variableName)) {
String originalName = globals.get(variableName);
log.warn("Global variable '{}' is being overridden in template", originalName);
}
}