2 files changed, 9 insertions, 1 deletions
diff --git a/xfa/fxfa/parser/cxfa_thisproxy.cpp b/xfa/fxfa/parser/cxfa_thisproxy.cpp
index 314c98c9f0..a3593e99b5 100644
--- a/xfa/fxfa/parser/cxfa_thisproxy.cpp
+++ b/xfa/fxfa/parser/cxfa_thisproxy.cpp
@@ -10,6 +10,12 @@
 #include "third_party/base/ptr_util.h"
 #include "xfa/fxfa/parser/cxfa_node.h"
 
+// static
+CXFA_ThisProxy* CXFA_ThisProxy::FromCXFAObject(CXFA_Object* that) {
+  return that && that->IsVariablesThis() ? static_cast<CXFA_ThisProxy*>(that)
+                                         : nullptr;
+}
+
 CXFA_ThisProxy::CXFA_ThisProxy(CXFA_Node* pThisNode, CXFA_Node* pScriptNode)
     : CXFA_Object(pThisNode->GetDocument(),
                   XFA_ObjectType::VariablesThis,
@@ -19,4 +25,4 @@ CXFA_ThisProxy::CXFA_ThisProxy(CXFA_Node* pThisNode, CXFA_Node* pScriptNode)
       m_pThisNode(pThisNode),
       m_pScriptNode(pScriptNode) {}
 
-CXFA_ThisProxy::~CXFA_ThisProxy() {}
+CXFA_ThisProxy::~CXFA_ThisProxy() = default;
diff --git a/xfa/fxfa/parser/cxfa_thisproxy.h b/xfa/fxfa/parser/cxfa_thisproxy.h
index 197a97da67..e86a6b5534 100644
--- a/xfa/fxfa/parser/cxfa_thisproxy.h
+++ b/xfa/fxfa/parser/cxfa_thisproxy.h
@@ -13,6 +13,8 @@
 
 class CXFA_ThisProxy : public CXFA_Object {
  public:
+  static CXFA_ThisProxy* FromCXFAObject(CXFA_Object* that);
+
   CXFA_ThisProxy(CXFA_Node* pThisNode, CXFA_Node* pScriptNode);
   ~CXFA_ThisProxy() override;