1 files changed, 6 insertions, 1 deletions
diff --git a/value/src/main/java/com/google/auto/value/processor/TemplateVars.java b/value/src/main/java/com/google/auto/value/processor/TemplateVars.java
index 235f0ada..d9e3337b 100644
--- a/value/src/main/java/com/google/auto/value/processor/TemplateVars.java
+++ b/value/src/main/java/com/google/auto/value/processor/TemplateVars.java
@@ -99,7 +99,7 @@ abstract class TemplateVars {
     return parsedTemplate().evaluate(vars);
   }
 
-  private Map<String, Object> toVars() {
+  private ImmutableMap<String, Object> toVars() {
     Map<String, Object> vars = new TreeMap<>();
     for (Field field : fields) {
       Object value = fieldValue(field, this);
@@ -114,6 +114,11 @@ abstract class TemplateVars {
     return ImmutableMap.copyOf(vars);
   }
 
+  @Override
+  public String toString() {
+    return getClass().getSimpleName() + toVars();
+  }
+
   static Template parsedTemplateForResource(String resourceName) {
     try {
       return Template.parseFrom(resourceName, TemplateVars::readerFromResource);