private string GetSourceMemberDescription(IQualifiedMember sourceMember)
        {
            var rootSourceMember = MapperContext.QualifiedMemberFactory.RootSource <TSource, TTarget>();
            var sourceMemberPath = sourceMember.GetFriendlyMemberPath(rootSourceMember);

            return(sourceMemberPath + " " + GetTypeDescription(sourceMember.Type));
        }