Merge pull request #145 from kcl-lang/feat-update-java-ast-index-signature-key-node

feat: update kcl java ast schema index signature key node

Author: Peefy

java/src/main/java/com/kcl/ast/SchemaIndexSignature.java

@@ -14,7 +14,7 @@
  */
 public class SchemaIndexSignature {
     @JsonProperty("key_name")
-    private String keyName;
+    private NodeRef<String> keyName;
 
     @JsonProperty("value")
     private NodeRef<Expr> value;
@@ -28,11 +28,11 @@ public class SchemaIndexSignature {
     @JsonProperty("value_ty")
     private NodeRef<Type> valueTy;
 
-    public String getKeyName() {
+    public NodeRef<String> getKeyName() {
         return keyName;
     }
 
-    public void setKeyName(String keyName) {
+    public void setKeyName(NodeRef<String> keyName) {
         this.keyName = keyName;
     }