/// <summary>
 /// Initializes a new instance of the <see cref="CompilationTest"/> class.
 /// </summary>
 /// <param name="sources">An array of <see cref="string"/>s to be used as initial sources of <see cref="CSharpSyntaxTree"/>s for the <see cref="Compilation"/>.</param>
 protected CompilationTest(params string[]?sources)
 {
     Compilation = TestableCompilationData.Create(sources);
 }
 /// <summary>
 /// Initializes a new instance of the <see cref="CompilationTest"/> class.
 /// </summary>
 protected CompilationTest()
 {
     Compilation = TestableCompilationData.Create();
 }