public void Setup()
{
_handlebars = Handlebars.Create();
using (_handlebars.Configure())
{
_handlebars.RegisterHelper("pow1", (output, context, arguments) => output.WriteSafeString(((int)arguments[0] * (int)arguments[0]).ToString()));
_handlebars.RegisterHelper("pow2", (output, context, arguments) => output.WriteSafeString(((int)arguments[0] * (int)arguments[0]).ToString()));
_handlebars.RegisterHelper("pow5", (output, options, context, arguments) => output.WriteSafeString(((int)arguments[0] * (int)arguments[0]).ToString()));
}
}