get() {
            if (this !is FirNamedReference) return null

            // In most cases, we can get the callee name from the callee's candidate symbols. However, there is at least one case where we
            // cannot do so:
            // ```
            // fun x(c: Char) {}
            // fun call(x: kotlin.Int) {
            //   operator fun Int.invoke(a: Int) {}

     *       }
     *     }
     *   }
     */
    private enum class PartialOrderOfScope(
        val scopeDistanceLevel: Int // Note: Don't use the built-in ordinal since there are some scopes that are at the same level.
    ) {
        Local(1),
        ScriptDeclarations(2),
        ClassUseSite(2),
        NestedClassifier(2),
        TypeParameter(2),