How to add predelay to JUCE reverb class?

How to add predelay to JUCE reverb class? I have implemented [juce_audio_basics] class Reverb and i would like to know how to go about creating a pre delay.

Well, you need a delay line. They are simple to write and there’s a few interesting problems: interpolation and performance.

Then it’s a case of arranging things so you have

[Delay]->[Reverb]->[Mixer]

Some pointers:
https://docs.juce.com/master/tutorial_dsp_delay_line.html

https://ccrma.stanford.edu/~jos/pasp/Fractional_Delay_Filtering_Linear.html