I am trying to update some code that uses the deprecated function PSD to use PWELCH instead.Can anyone help me for solving this problem

I want to update the following code instead of using PSD,because when I excute the following code I will get on the following message " psd has been removed use periodogram or pwelch instead ",I must to use another one like pwelch or periodogram,so I need anyone please to update my code.

I have the following code

function value = aubt_getSpecRange (data, hz, r1, r2)

% Expects as input a signal vector and estimates the mean of the frequency

% spectrum in a given range.

%

% values = aubt_getSpecRange (data, hz, r1, r2)

%

% input:

% data: signal vector

% hz: samplerate of the input signal(s)

% r1: lower bound of the frequeny band

% r2: upper bound of the frequeny band

%

% output:

% values: mean of the frequency spectrum

len = length (data);

spec = psd (data, len, hz/2);

spec = spec / sum (spec);

hzPerSample = hz / len;

spec = spec (ceil (r1/hzPerSample)+1:floor (r2/hzPerSample)+1);

if isempty (spec)

value = 0;

else

value = mean (spec);

end