6 val x = <bold>""</bold>.extensionFun() (in foo())
3 	fun <bold>String</bold>.extensionFun(): Any = this (in extensionFun() on String)
3 		fun String.extensionFun(): Any = <bold>this</bold> (in extensionFun() on String)
3 			<bold>fun String.extensionFun(): Any</bold> = this
6 				val x = "".<bold>extensionFun()</bold> (in foo())
6 					<bold>val x</bold> = "".extensionFun() (in foo())
