UI 자동화를 위해 바인딩 기능 구현

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Packages/com.unity.inputsystem/Samples~/RebindingUI/InputActionExtensions.cs

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+using System;
+
+namespace UnityEngine.InputSystem.Samples.RebindUI
+{
+    /// <summary>
+    /// Extension methods to reduce code bloat of this example.
+    /// </summary>
+    public static class InputActionExtensions
+    {
+        /// <summary>
+        /// Attempts to find an action binding using its binding ID (GUID).
+        /// </summary>
+        /// <param name="action">The action instance, may be null.</param>
+        /// <param name="bindingId">The binding ID (GUID) represented by a string.</param>
+        /// <returns>Zero-based index of the binding or -1 if not found.</returns>
+        public static int FindBindingById(this InputAction action, string bindingId)
+        {
+            if (action == null || string.IsNullOrEmpty(bindingId))
+                return -1;
+            var id = new Guid(bindingId);
+            return action.bindings.IndexOf(x => x.id == id);
+        }
+    }
+}