/// <summary>
/// Pops a reference from the evaluation stack and branches to the given label if it is the null reference
/// </summary>
/// <param name="generator">The <see cref="T:System.Reflection.Emit.XsILGenerator" /> to emit instructions from</param>
/// <param name="labelName">The name of the fluently-specified label</param>
public static XsILGenerator BranchIfNull(this XsILGenerator generator, string labelName)
=> generator.BranchIfNull(generator.GetOrCreateLabel(labelName));