Multiple line powershell command in JobDSL - powershell

Question

I'm tinkering with JobDSL and can't seem to find a way to run several powershell commands in one go. Example:
job('whatever'){
steps{
powershell("""$var = $env:mybuildvar
cmdlet2 $var""")
}
}
How do I achieve this? Thanks!
it seems that """ """ works for batch, but not for powershell.
Also, if I try to use $var with escaping or without JobDSL fails with
ERROR: (sandbox_CI_Dev, line 15) No signature of method:
javaposse.jobdsl.dsl.helpers.step.StepContext.powershell() is
applicable for argument types: (java.lang.String) values: [$var =
$ENV:mybuildvar]
The error is reproducable on jobdsl playground (http://job-dsl.herokuapp.com/), use following code (or anything similar to code above):
job('whatever') {
steps{
powershell("write-output $")
}
}
also powershell('write-output test; write-output test') doesn't work

Answer 1

The method name is powerShell, not powershell. See https://jenkinsci.github.io/job-dsl-plugin/#path/job-steps-powerShell.
And Groovy interpolates double quoted strings, see String interpolation. You need to use single quotes to avoid the interpolation if you want to use the dollar sign ($), e.g. '$var'. Use triple single quotes for multiline strings.
job('whatever'){
steps{
powerShell('''$var = $env:mybuildvar
cmdlet2 $var''')
}
}