Hide some API symbols

Author: Bromeon

godot-core/src/meta/traits.rs

@@ -175,6 +175,7 @@ pub trait ArrayElement: GodotType + ToGodot + FromGodot + sealed::Sealed + meta:
         builtin_type_string::<Self>()
     }
 
+    #[doc(hidden)]
     fn debug_validate_elements(_array: &builtin::Array<Self>) -> Result<(), ConvertError> {
         // No-op for most element types.
         Ok(())

godot-core/src/registry/property.rs

@@ -60,6 +60,7 @@ pub trait Export: Var {
     ///
     /// Only overridden for `Gd<T>`, to detect erroneous exports of `Node` inside a `Resource` class.
     #[allow(clippy::wrong_self_convention)]
+    #[doc(hidden)]
     fn as_node_class() -> Option<ClassName> {
         None
     }