Setter of the property is a set method declared alongside the property.

interface Setter<D, E, R> : Setter<R>, (D, E, R) -> Unit

The setter of this mutable property, used to change the value of the property.

abstract val setter: Setter<D, E, R>

Modifies the value of the property.

abstract fun set(receiver1: D, receiver2: E, value: R)

Returns a parameter representing the extension receiver instance needed to call this callable, or null if this callable is not an extension.

val KCallable<*>.extensionReceiverParameter: KParameter?

Returns a parameter representing the this instance needed to call this callable, or null if this callable is not a member of a class and thus doesn't take such parameter.

val KCallable<*>.instanceParameter: KParameter?

Provides a way to suppress JVM access checks for a callable.

var KCallable<*>.isAccessible: Boolean

Returns a Java Field instance corresponding to the backing field of the given property, or null if the property has no backing field.

val KProperty<*>.javaField: Field?

Returns a Java Method instance corresponding to the getter of the given property, or null if the property has no getter, for example in case of a simple private val in a class.

val KProperty<*>.javaGetter: Method?

Returns a Java Method instance corresponding to the setter of the given mutable property, or null if the property has no setter, for example in case of a simple private var in a class.

val KMutableProperty<*>.javaSetter: Method?

Returns parameters of this callable, excluding the this instance and the extension receiver parameter.

val KCallable<*>.valueParameters: List<KParameter>

Calls a callable in the current suspend context. If the callable is not a suspend function, behaves as KCallable.call. Otherwise, calls the suspend function with current continuation.

suspend fun <R> KCallable<R>.callSuspend(
    vararg args: Any?
): R

Calls a callable in the current suspend context. If the callable is not a suspend function, behaves as KCallable.callBy. Otherwise, calls the suspend function with current continuation.

suspend fun <R> KCallable<R>.callSuspendBy(
    args: Map<KParameter, Any?>
): R

Returns an annotation of the given type on this element.

fun <T : Annotation> KAnnotatedElement.findAnnotation(): T?

Returns the parameter of this callable with the given name, or null if there's no such parameter.

fun KCallable<*>.findParameterByName(
    name: String
): KParameter?

Returns the instance of a delegated member extension property, or null if this property is not delegated. Throws an exception if this is not an extension property.

fun <D> KProperty2<D, *, *>.getExtensionDelegate(
    receiver: D
): Any?

Returns true if this element is annotated with an annotation of type T.

fun <T : Annotation> KAnnotatedElement.hasAnnotation(): Boolean

This is an experimental API. Given a class for a compiled Kotlin lambda or a function expression, returns a KFunction instance providing introspection capabilities for that lambda or function expression and its parameters. Not all features are currently supported, in particular KCallable.call and KCallable.callBy will fail at the moment.

fun <R> Function<R>.reflect(): KFunction<R>?