// CHECK JVM_IR:
//   Mangled name: #toString(kotlin.String){}kotlin.String
//   Public signature: /toString|4425972968165869572[0]
//   Public signature debug description: toString(kotlin.String){}kotlin.String
// CHECK JS_IR NATIVE:
//   Mangled name: #toString(kotlin.String){}
//   Public signature: /toString|-3383991056988645668[0]
//   Public signature debug description: toString(kotlin.String){}
fun toString(grade: String): String

