Removing is operator in preference to as operator for .NET code

Author: jimevans

dotnet/src/support/Events/EventFiringWebDriver.cs

@@ -1419,20 +1419,6 @@ public void Submit()
                 }
             }
 
-            public override bool Equals(object obj)
-            {
-                if (!(obj is IWebElement))
-                    return false;
-
-                IWebElement other = (IWebElement)obj;
-                if(other is IWrapsElement wrapper)
-                {
-                    other = ((IWrapsElement)wrapper).WrappedElement;
-                }
-
-                return underlyingElement.Equals(other);
-            }
-
             /// <summary>
             /// Click this element. If this causes a new page to load, this method will block until
             /// the page has loaded. At this point, you should discard all references to this element
@@ -1574,6 +1560,28 @@ public ReadOnlyCollection<IWebElement> FindElements(By by)
 
                 return wrappedElementList.AsReadOnly();
             }
+
+            /// <summary>
+            /// Determines whether the specified <see cref="EventFiringWebElement"/> is equal to the current <see cref="EventFiringWebElement"/>. 
+            /// </summary>
+            /// <param name="obj">The <see cref="EventFiringWebElement"/> to compare to the current <see cref="EventFiringWebElement"/>.</param>
+            /// <returns><see langword="true"/> if the specified <see cref="EventFiringWebElement"/> is equal to the current <see cref="EventFiringWebElement"/>; otherwise, <see langword="false"/>.</returns>
+            public override bool Equals(object obj)
+            {
+                IWebElement other = obj as IWebElement;
+                if (other == null)
+                {
+                    return false;
+                }
+                
+                IWrapsElement otherWrapper = other as IWrapsElement;
+                if (otherWrapper != null)
+                {
+                    other = otherWrapper.WrappedElement;
+                }
+
+                return underlyingElement.Equals(other);
+            }
         }
     }
 }