clean up ChangeChecks, rename method

com.unity.ml-agents/Editor/BehaviorParametersEditor.cs

         {
             var so = serializedObject;
             so.Update();
+            bool needModelUpdate; // Whether the name, model, or inference device changed.
+            bool behaviorTypeChanged;
-            EditorGUI.BeginChangeCheck();
-            EditorGUILayout.PropertyField(so.FindProperty("m_BehaviorName"));
-            bool needModelUpdate = EditorGUI.EndChangeCheck();
+            EditorGUI.BeginChangeCheck(); // global
+            {
+                EditorGUILayout.PropertyField(so.FindProperty("m_BehaviorName"));
+            }
+            needModelUpdate = EditorGUI.EndChangeCheck();
+
-            var brainParamsChanged = EditorGUI.EndChangeCheck();
-            EditorGUILayout.PropertyField(so.FindProperty("m_Model"), true);
-            EditorGUI.indentLevel++;
-            EditorGUILayout.PropertyField(so.FindProperty("m_InferenceDevice"), true);
-            EditorGUI.indentLevel--;
+            {
+                EditorGUILayout.PropertyField(so.FindProperty("m_Model"), true);
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(so.FindProperty("m_InferenceDevice"), true);
+                EditorGUI.indentLevel--;
+            }
-            EditorGUILayout.PropertyField(so.FindProperty("m_BehaviorType"));
-            var behaviorTypeChanged = EditorGUI.EndChangeCheck();
+            {
+                EditorGUILayout.PropertyField(so.FindProperty("m_BehaviorType"));
+            }
+            behaviorTypeChanged = EditorGUI.EndChangeCheck();
-            EditorGUI.BeginChangeCheck();
             EditorGUILayout.PropertyField(so.FindProperty("TeamId"));
             EditorGUI.BeginDisabledGroup(Application.isPlaying);
             {
-            var othersChanged = EditorGUI.EndChangeCheck();
-            m_RequireReload = needModelUpdate || brainParamsChanged || behaviorTypeChanged || othersChanged;
+            m_RequireReload = EditorGUI.EndChangeCheck();
-                UpdateAgent(needModelUpdate, behaviorTypeChanged);
+                UpdateAgentFromBehaviorParameters(needModelUpdate, behaviorTypeChanged);
             }
         }
 
             }
         }
 
-        void UpdateAgent(bool needModelUpdate, bool behaviorTypeChanged)
+        void UpdateAgentFromBehaviorParameters(bool needModelUpdate, bool behaviorTypeChanged)
         {
             if (Application.isPlaying)
             {