Create an interface with provideDelegate() method #KT-26494

libraries/stdlib/src/kotlin/properties/Interfaces.kt

@@ -52,3 +52,27 @@ public interface ReadWriteProperty<in R, T> {
      */
     public operator fun setValue(thisRef: R, property: KProperty<*>, value: T)
 }
+
+/**
+ * Base interface that can be used for implementing property delegate providers.
+ *
+ * This is provided only for convenience; you don't have to extend this interface
+ * as long as your delegate provider has a method with the same signature.
+ *
+ * @param T the type of object which owns the delegated property.
+ * @param D the type of property delegates this provider provides.
+ */
+@SinceKotlin("1.4")
+public interface PropertyDelegateProvider<in T, out D> {
+    /**
+     * Returns the delegate of the property for the given object.
+     *
+     * This function can be used to extend the logic of creating the object (e.g. perform validation checks)
+     * to which the property implementation is delegated.
+     *
+     * @param thisRef the object for which property delegate is requested.
+     * @param property the metadata for the property.
+     * @return the property delegate.
+     */
+    public operator fun provideDelegate(thisRef: T, property: KProperty<*>): D
+}