* map.head changed to getter

* is_valid_data documented

package.json

@@ -13,7 +13,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@hyperionbt/helios": "^0.16.4",
+    "@hyperionbt/helios": "^0.16.5",
     "@jsdoc/ast": "^0.2.1",
     "@jsdoc/parse": "^0.3.1",
     "helios": "^0.0.5",

src/lang/builtins/map.md

@@ -22,6 +22,14 @@ Map[KeyType]ValueType::from_data(data: Data) -> Map[KeyType]ValueType
 
 ## Getters
 
+### `head`
+
+Get the key and the value of the first entry.
+
+```helios
+map.head -> (KeyType, ValueType)
+```
+
 ### `head_key`
 
 Returns the key of the first entry in the `Map`. Throws an error if the `Map` is empty.
@@ -204,13 +212,6 @@ Returns the value of the first entry in the map that matches the given key (wrap
 map.get_safe(key: KeyType) -> Option[ValueType]
 ```
 
-### `head`
-
-Get the key and the value of the first entry.
-
-```helios
-map.head() -> (KeyType, ValueType)
-```
 
 ### `is_empty`
 

src/lang/user-defined-types/methods/automatic-methods.md

@@ -37,6 +37,14 @@ MyType::from_data(data: Data) -> MyType
 
 If you set [`CHECK_CASTS`](../../../api/reference/namespaces/config.md#check_casts) to `true`, a warning will be printed if the structure of `data` doesn't match the type.
 
+## `is_valid_data`
+
+Deep check that the given data matches the expected format.
+
+```helios
+MyType::is_valid_data(data: Data) -> Bool
+```
+
 ## `serialize`
 
 The `serialize` method is automatically defined on every user-type, and thus `serialize` is a reserved name that can't be used for other methods.
@@ -57,4 +65,4 @@ The `show` method returns a string representation of underlying instance, which
 my_instance.show() -> String
 ```
 
-> **Note**: usually you will use `print(x.show())` instead `print(x.serialize().show())` when debugging.
+> **Note**: usually you will use `print(x.show())` instead of `print(x.serialize().show())` when debugging.