Jenkins Pipeline produces error 'No such DSL method findFiles'

Symptom

At the end of a Jenkins Pipeline deployment step (using the mettleci datastage deploy command) you receive an error message that looks like this...

Command failed.

No such DSL method 'findFiles' found among steps 
[acceptGitLabMR, addGitLabMRComment, archive, bat, build, ... ]

Cause

Your Jenkins platform does not have the findFiles command available as you don’t have the Pipeline Utility Steps plugin installed.

Solution

Install the Pipeline Utility Steps plugin in your Jenkins platform.