getAnnotation 
  abstract fun <A : Annotation> getAnnotation(fromElement: KAnnotatedElement, annotationType: KClass<A>, excludes: Set<String>): A?(source)
Get annotation instance from KAnnotatedElement. e.g. from Function or KClass.
Return
The annotation instance, or null.
Parameters
fromElement 
annotation fromElement instance.
annotationType 
annotation type.
excludes
excludes annotation class name. They will not be parsing.
open fun <A : Annotation> getAnnotation(fromElement: KAnnotatedElement, annotationType: KClass<A>): A?(source)
Get annotation instance fromElement KAnnotatedElement. e.g. fromElement Function or KClass.