You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ttopKLogits.m
    path of file: ./repos/transformer-models/test/sampling
    
    the code of the file until where you have to start completion: classdef ttopKLogits < matlab.unittest.TestCase
    % ttopKLogits   Unit tests for sampling.topKLogits
    
    % Copyright 2020 The MathWorks, Inc.
    
    methods(Test)
        function testForKIsOne(test)
            % When K=1 topKLogits followed by softmax is just the one-hot
            % for the argmax.
            numClasses = 100;
            % Make an arbitrary class t
    
function testForKIsOne(test)
            % When K=1 topKLogits followed by softmax is just the one-hot
            % for the argmax.
            numClasses = 100;
            % Make an arbitrary class the largest logit.
            class = randi([1,numClasses]);
            x = rand([numClasses,1]);
            x(class) = max(x,[],'all')+1;
            % Call topKLogits with K=1
            topK = 1;
            logits = sampling.topKLogits(x,topK);
            logits = dlarray(logits);
            % Apply softmax to get a probability distribution over the
            % classes.
            actProb = softmax(logits,'DataFormat','C');
            % The expected output is a delta distribution on the arbitrary
            % class.
            expProb = zeros([numClasses,1]);
            expProb(class) = 1;
            test.verifyEqual(extractdata(actProb),expProb);
        end