Microsoft.DotNet.ApiCompatibility.IApiComparer.GetDifferences(System.Collections.Generic.IEnumerable<Microsoft.DotNet.ApiCompatibility.ElementContainer<Microsoft.CodeAnalysis.IAssemblySymbol>>, System.Collections.Generic.IReadOnlyList<System.Collections.Generic.IEnumerable<Microsoft.DotNet.ApiCompatibility.ElementContainer<Microsoft.CodeAnalysis.IAssemblySymbol>>>)