Add ArgumentsSet VO.

docs/Generator.md

@@ -356,6 +356,20 @@ $list = [
 ];
 ```
 
+If you want to reuse existing argument sets from other tasks, you can use the `ArgumentsSet` value object referencing them:
+
+```php
+use IdeHelper\Generator\Directive\ExpectedArguments;
+use IdeHelper\ValueObject\ArgumentsSet;
+
+$method = '\\' . static::CLASS_FORMAT_HELPER . '::sidebarLink()';
+$list = [
+    ArgumentsSet::create(FormatIconFontAwesome5Task::SET_ICONS_FONTAWESOME),
+];
+$directive = new ExpectedArguments($method, 1, $list);
+```
+Just make sure those argument sets are actually available, as this is not checked for you.
+
 ##### ExitPoint
 This new directive can help to let the IDE know what methods abort the current code flow.
 It will show "Unreachable statement" warning and usually highlight the following code in yellow to inform you.

src/Generator/Directive/RegisterArgumentsSet.php

@@ -13,7 +13,7 @@
  *     \MyClass::REQUIRED
  * );
  *
- * Then it can be used in other places as argumentsSet("mySet").
+ * Then it can be used in other places as argumentsSet('mySet').
  *
  * @see https://www.jetbrains.com/help/phpstorm/ide-advanced-metadata.html#arguments-set
  */

src/ValueObject/ArgumentsSet.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace IdeHelper\ValueObject;
+
+/**
+ * Helps to use an existing argument set to be used in other directives for DRY code.
+ *
+ * Then it can be used in other places as argumentsSet('mySet').
+ *
+ * @see https://www.jetbrains.com/help/phpstorm/ide-advanced-metadata.html#arguments-set
+ */
+class ArgumentsSet implements ValueObjectInterface {
+
+	/**
+	 * @var string
+	 */
+	protected $value;
+
+	/**
+	 * @param string $value
+	 */
+	private function __construct(string $value) {
+		$this->value = $value;
+	}
+
+	/**
+	 * Creates itself from a string.
+	 *
+	 * @param string $value
+	 *
+	 * @return static
+	 */
+	public static function create(string $value) {
+		return new static($value);
+	}
+
+	/**
+	 * @return string
+	 */
+	public function raw(): string {
+		return $this->value;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function __toString(): string {
+		return 'argumentsSet(\'' . $this->value . '\')';
+	}
+
+}