When your pipeline has a single filespec in the depotSource like this

p4sync charset: 'none',

                <snip>

                source: depotSource('//depot/branch/...')

Then the generated client view is

 //depot/branch/...   //P4_CLIENT/...

This is request for that client view to be like it would be if you had two or more filespecs:

//depot/branch/...   //P4_CLIENT/depot/branch/...

Use case:   all existing "make" files assume a branch name in the path.

Workaround:

add a second depotPath to the list - e.g., source: depotSource('//depot/branch/...' '//depot/not/there')

Code:

In org.jenkinsci.plugins.p4.client.ViewMapHelper.java, allow an option to make multi = true regardless of views.size().