Kotlin: Support apply

java/ql/lib/semmle/code/java/frameworks/kotlin/Kotlin.qll

@@ -0,0 +1,21 @@
+/** Provides classes and predicates related to `kotlin`. */
+
+import java
+
+/** A call to Kotlin's `apply` method. */
+class KotlinApply extends MethodAccess {
+  ExtensionMethod m;
+
+  KotlinApply() {
+    this.getMethod() = m and
+    m.hasQualifiedName("kotlin", "StandardKt", "apply")
+  }
+
+  /** Gets the function block argument of this call. */
+  LambdaExpr getLambdaArg() {
+    result = this.getArgument(m.getExtensionReceiverParameterIndex() + 1)
+  }
+
+  /** Gets the receiver argument of this call. */
+  Argument getReceiver() { result = this.getArgument(m.getExtensionReceiverParameterIndex()) }
+}