requireIs
inline fun <R, T> ApiResult<T>.requireIs(exception: (T) -> Exception = { value ->
"Result value is of type ${value?.let { it::class.simpleName }} but expected ${R::class.simpleName}"
.let(::ConditionNotSatisfiedException)
}): ApiResult<R>
Return
if this result value is R, then returns it. If not, returns an ApiResult.Error