Added documentation for RegistryTrait, EnumTrait and CloningRegistryTrait

src/utils/CloningRegistryTrait.php

@@ -23,6 +23,10 @@ declare(strict_types=1);
 
 namespace pocketmine\utils;
 
+/**
+ * This trait offers the same functionality as RegistryTrait, but also clones any returned objects to prevent outside
+ * modification.
+ */
 trait CloningRegistryTrait{
 	use RegistryTrait;
 

src/utils/EnumTrait.php

@@ -23,6 +23,13 @@ declare(strict_types=1);
 
 namespace pocketmine\utils;
 
+/**
+ * This trait allows a class to simulate a Java-style enum. Members are exposed as static methods and handled via
+ * __callStatic().
+ *
+ * Classes using this trait need to include \@method tags in their class docblock for every enum member.
+ * Alternatively, just put \@generate-registry-docblock in the docblock and run tools/generate-registry-annotations.php
+ */
 trait EnumTrait{
 	use RegistryTrait;
 	use NotCloneable;

src/utils/RegistryTrait.php

@@ -28,6 +28,13 @@ use function count;
 use function mb_strtoupper;
 use function preg_match;
 
+/**
+ * This trait allows a class to simulate object class constants, since PHP doesn't currently support this.
+ * These faux constants are exposed in static class methods, which are handled using __callStatic().
+ *
+ * Classes using this trait need to include \@method tags in their class docblock for every faux constant.
+ * Alternatively, just put \@generate-registry-docblock in the docblock and run tools/generate-registry-annotations.php
+ */
 trait RegistryTrait{
 	/**
 	 * @var object[]