// code cleanup, yay

// original code
private string UserAgent
{
    get
    {
        if (Context.Headers != null) {
            return Context.Headers["User-Agent"];
        }

        return null;
    }
}

// braces, private keyword unnecesarry
string UserAgent
{
    get
    {
        if (Context.Headers != null)
            return Context.Headers["User-Agent"];

        return null;
    }
}


// use ternary
string UserAgent
{
    get
    {
        return Context.Headers != null
            ? return Context.Headers["User-Agent"]
            : null;
    }
}


// further optimizations are C# 7 specific

// fancy get-only property thing
string UserAgent => Context.Headers != null
            ? return Context.Headers["User-Agent"]
            : null;


// fancy null-check thing
private string UserAgent => Context.Headers?.Get("User-Agent");

// note: I only used the .Get() form of this because I can't use square brackets after the ?. operator