/// <summary>
/// Invokes the target <paramref name="function"/>
/// </summary>
/// <typeparam name="T">The type of the parameter of the method that this delegate encapsulates.</typeparam>
/// <typeparam name="TResult">The type of the return value of the method that this delegate encapsulates.</typeparam>
/// <param name="function">The target method.</param>
/// <param name="arg">The argument passed to the parameter of the target method.</param>
/// <returns>The result of invoking the target method.</returns>
public TResult Invoke <T, TResult>(Func <T, TResult> function, T arg)
{
return(((Func <T, TResult>)delegates.GetOrAdd(function, d => CacheProvider.Decorate(function)))(arg));
}
/// <summary>
/// Invokes the target <paramref name="function"/>
/// </summary>
/// <typeparam name="T1">The type of the first parameter of the method that this delegate encapsulates.</typeparam>
/// <typeparam name="T2">The type of the second parameter of the method that this delegate encapsulates.</typeparam>
/// <typeparam name="T3">The type of the third parameter of the method that this delegate encapsulates.</typeparam>
/// <typeparam name="T4">The type of the third parameter of the method that this delegate encapsulates.</typeparam>
/// <typeparam name="TResult">The type of the return value of the method that this delegate encapsulates.</typeparam>
/// <param name="function">The target method.</param>
/// <param name="arg1">The argument passed to the first parameter of the target method.</param>
/// <param name="arg2">The argument passed to the second parameter of the target method.</param>
/// <param name="arg3">The argument passed to the third parameter of the target method.</param>
/// <param name="arg4">The argument passed to the forth parameter of the target method.</param>
/// <returns>The result of invoking the target method.</returns>
public TResult Invoke <T1, T2, T3, T4, TResult>(Func <T1, T2, T3, T4, TResult> function, T1 arg1, T2 arg2, T3 arg3, T4 arg4)
{
return(((Func <T1, T2, T3, T4, TResult>)delegates.GetOrAdd(function, d => CacheProvider.Decorate(function)))(arg1, arg2, arg3, arg4));
}