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KParameter

interface KParameter : KAnnotatedElement

Represents a parameter passed to a function or a property getter/setter, including this and extension receiver parameters.

Kind	enum class Kind Kind represents a particular position of the parameter declaration in the source code, such as an instance, an extension receiver parameter or a value parameter.

index	abstract val index: Int 0-based index of this parameter in the parameter list of its containing callable.
isOptional	abstract val isOptional: Boolean `true` if this parameter is optional and can be omitted when making a call via KCallable.callBy, or `false` otherwise.
isVararg	abstract val isVararg: Boolean `true` if this parameter is `vararg`. See the Kotlin language documentation for more information.
kind	abstract val kind: Kind Kind of this parameter.
name	abstract val name: String? Name of this parameter as it was declared in the source code, or `null` if the parameter has no name or its name is not available at runtime. Examples of nameless parameters include `this` instance for member functions, extension receiver for extension functions or properties, parameters of Java methods compiled without the debug information, and others.
type	abstract val type: KType Type of this parameter. For a `vararg` parameter, this is the type of the corresponding array, not the individual element.

abstract val annotations: List<Annotation>

Annotations which are present on this element.

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

Returns an annotation of the given type on this element.