R: move FindResultFor(Symbol) to ParseResult

Author: jonsequitur

src/System.CommandLine/Parsing/ParseResult.cs

@@ -166,5 +166,14 @@ public T ValueForOption<T>(string alias)
 
         public OptionResult? FindResultFor(IOption option) =>
             _rootCommandResult.FindResultFor(option);
+
+        public SymbolResult? FindResultFor(ISymbol symbol) =>
+            symbol switch
+            {
+                IArgument argument => FindResultFor(argument),
+                ICommand command => FindResultFor(command),
+                IOption option => FindResultFor(option),
+                _ => throw new ArgumentOutOfRangeException(nameof(symbol))
+            };
     }
 }

src/System.CommandLine/Parsing/ParseResultExtensions.cs

@@ -159,7 +159,6 @@ argument.Parents[0] is ICommand command &&
                         builder.Append(">");
 
                         break;
-
                 }
 
                 if (includeArgumentName)
@@ -182,17 +181,6 @@ argument.Parents[0] is ICommand command &&
             }
         }
 
-        public static SymbolResult? FindResultFor(
-            this ParseResult parseResult,
-            ISymbol symbol) =>
-            symbol switch
-            {
-                IArgument argument => parseResult.FindResultFor(argument),
-                ICommand command => parseResult.FindResultFor(command),
-                IOption option => parseResult.FindResultFor(option),
-                _ => throw new ArgumentOutOfRangeException(nameof(symbol))
-            };
-
         public static bool HasOption(
             this ParseResult parseResult,
             IOption option)