extend result builder

Author: NullIsOne

Components/Sources/Common/Protocols/Editor.swift

@@ -35,7 +35,7 @@ public struct EditorBuilder<T: Editor> {
         Array(components.joined())
     }
 
-    // to use like if else
+    // to use like if-else
 
     public static func buildEither(first component: T) -> T {
         return component
@@ -44,4 +44,8 @@ public struct EditorBuilder<T: Editor> {
     public static func buildEither(second component: T) -> T {
         return component
     }
+
+    public static func buildOptional(_ component: [T]?) -> [T] {
+        return []
+    }
 }