Add padding info in the example proj for the InputBar

Example/Sources/View Controllers/AdvancedExampleViewController.swift

@@ -129,7 +129,6 @@ final class AdvancedExampleViewController: ChatViewController {
         messageInputBar.sendButton.image = #imageLiteral(resourceName: "ic_up")
         messageInputBar.sendButton.title = nil
         messageInputBar.sendButton.imageView?.layer.cornerRadius = 16
-        messageInputBar.middleContentViewPadding.right = -38
         let charCountButton = InputBarButtonItem()
             .configure {
                 $0.title = "0/140"
@@ -148,7 +147,9 @@ final class AdvancedExampleViewController: ChatViewController {
                 item.setTitleColor(color, for: .normal)
         }
         let bottomItems = [.flexibleSpace, charCountButton]
-        messageInputBar.middleContentViewPadding.bottom = 8
+        
+        configureInputBarPadding()
+        
         messageInputBar.setStackViewItems(bottomItems, forStack: .bottom, animated: false)
 
         // This just adds some more flare
@@ -164,6 +165,22 @@ final class AdvancedExampleViewController: ChatViewController {
         }
     }
     
+    /// The input bar will autosize based on the contained text, but we can add padding to adjust the height or width if neccesary
+    /// See the InputBar diagram here to visualize how each of these would take effect:
+    /// https://raw.githubusercontent.com/MessageKit/MessageKit/master/Assets/InputBarAccessoryViewLayout.png
+    private func configureInputBarPadding() {
+    
+        // Entire InputBar padding
+        messageInputBar.padding.bottom = 8
+        
+        // or MiddleContentView padding
+        messageInputBar.middleContentViewPadding.right = -38
+
+        // or InputTextView padding
+        messageInputBar.inputTextView.textContainerInset.bottom = 8
+        
+    }
+    
     // MARK: - Helpers
     
     func isTimeLabelVisible(at indexPath: IndexPath) -> Bool {