update some for flag parse

Author: inhere

src/FlagsParser.php

@@ -283,6 +283,16 @@ protected function parseRawArgs(array $rawArgs): array
         return $args;
     }
 
+    /**
+     * @param mixed|null $default
+     *
+     * @return mixed|null
+     */
+    public function getFirstArg($default = null)
+    {
+        return $this->getArg(0, $default);
+    }
+
     public function resetResults(): void
     {
         // clear match results

src/Helper/ValueCollector.php

@@ -0,0 +1,27 @@
+<?php declare(strict_types=1);
+
+namespace Toolkit\PFlag\Helper;
+
+use Toolkit\PFlag\FlagsParser;
+
+/**
+ * class ValueCollector
+ */
+class ValueCollector
+{
+    /**
+     * @return $this
+     */
+    public function new(): self
+    {
+        return new self();
+    }
+
+    /**
+     * @param FlagsParser $fs
+     */
+    public function collect(FlagsParser $fs): void
+    {
+
+    }
+}

src/SFlags.php

@@ -872,16 +872,6 @@ public function getArg($nameOrIndex, $default = null)
         return $default ?? FlagType::getDefault($define['type']);
     }
 
-    /**
-     * @param mixed|null $default
-     *
-     * @return mixed|null
-     */
-    public function getFirstArg($default = null)
-    {
-        return $this->getArg(0, $default);
-    }
-
     /**
      * @param string|int $nameOrIndex
      *