Revert "Rename `Owned*::to_ref()` to `as_ref()`"

This reverts commit 5394faca16.

src/function.rs

@@ -39,8 +39,8 @@ pub struct OwnedFunction(pub(crate) crate::types::LuaOwnedRef);
 #[cfg(feature = "unstable")]
 impl OwnedFunction {
     /// Get borrowed handle to the underlying Lua function.
-    pub const fn as_ref(&self) -> Function {
-        Function(self.0.as_ref())
+    pub const fn to_ref(&self) -> Function {
+        Function(self.0.to_ref())
     }
 }
 

src/table.rs

@@ -32,8 +32,8 @@ pub struct OwnedTable(pub(crate) crate::types::LuaOwnedRef);
 #[cfg(feature = "unstable")]
 impl OwnedTable {
     /// Get borrowed handle to the underlying Lua table.
-    pub const fn as_ref(&self) -> Table {
-        Table(self.0.as_ref())
+    pub const fn to_ref(&self) -> Table {
+        Table(self.0.to_ref())
     }
 }
 

src/types.rs

@@ -253,7 +253,7 @@ impl fmt::Debug for LuaOwnedRef {
 #[cfg(feature = "unstable")]
 impl Clone for LuaOwnedRef {
     fn clone(&self) -> Self {
-        self.as_ref().clone().into_owned()
+        self.to_ref().clone().into_owned()
     }
 }
 
@@ -282,7 +282,7 @@ impl LuaOwnedRef {
         }
     }
 
-    pub(crate) const fn as_ref(&self) -> LuaRef {
+    pub(crate) const fn to_ref(&self) -> LuaRef {
         LuaRef {
             lua: &self.lua,
             index: self.index,

src/userdata.rs

@@ -747,8 +747,8 @@ pub struct OwnedAnyUserData(pub(crate) crate::types::LuaOwnedRef);
 
 #[cfg(feature = "unstable")]
 impl OwnedAnyUserData {
-    pub const fn as_ref(&self) -> AnyUserData {
-        AnyUserData(self.0.as_ref())
+    pub const fn to_ref(&self) -> AnyUserData {
+        AnyUserData(self.0.to_ref())
     }
 }