using NUnit.Framework.Constraints; using System.Runtime.CompilerServices; namespace NUnit.Framework { [NullableContext(1)] [Nullable(0)] public abstract class Contains { public static SomeItemsConstraint Item([Nullable(2)] object expected) { return new SomeItemsConstraint(new EqualConstraint(expected)); } public static DictionaryContainsKeyConstraint Key(object expected) { return new DictionaryContainsKeyConstraint(expected); } public static DictionaryContainsValueConstraint Value([Nullable(2)] object expected) { return new DictionaryContainsValueConstraint(expected); } public static SubstringConstraint Substring(string expected) { return new SubstringConstraint(expected); } } }