using System;
using System.Linq;
using System.Collections.Generic;
using System.Collections.Concurrent;
using System.Reflection;
using System.Linq.Expressions;
using System.Threading;
using System.Threading.Tasks;

var flags = BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly;
string[] names = typeof(Probe).GetMethods(flags).Select(method => method.Name).OrderBy(name => name, StringComparer.Ordinal).ToArray();
Console.WriteLine("declared:" + string.Join(",", names));
Console.WriteLine($"inherited:{typeof(Probe).GetMethod(nameof(Parent.Inherited)) is not null}");
Console.WriteLine($"private:{typeof(Probe).GetMethod("Secret", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly)!.IsPrivate}");
class Parent { public void Inherited() { } }
sealed class Probe : Parent { public void Own() { } private void Secret() { } }