CustomTypeProvider constructor can be simplified

[asulwer]

CustomTypeProvider line 18. IDE states line can be simplified

from

public CustomTypeProvider(Type[] types) : base(ParsingConfig.Default)
{
    _types = new HashSet<Type>(types ?? new Type[] { });
    _types.Add(typeof(ExpressionUtils));
}

to

public CustomTypeProvider(Type[] types) : base(ParsingConfig.Default)
{
    _types = new HashSet<Type>(types ?? new Type[] { }) {
        typeof(ExpressionUtils)
    };
}