Passing argument in groovy DSL pipeline functions

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Groovy

DevOps

Jenkins

I want to call a function under my pipeline , the function name is CMList and the arguments eList and pLists are in the format of email address .

def eList ="${emailAddress}"
def pLists = "${POEmailList}"

Below are the choice parameter added , so that the entries appear in the Jenkins UI and value needs to be input for both
eList and pLists .

properties([
  parameters([
    text(description: 'Provide Email Address of the  PO ', name: 'POEmailList'),
    text(description: 'Provide Email Address of the people to be notified', name: 'emailAddress'),
    ])
])

Below snippet describes the function call:

node(windowsNode) {
nslookup() 
CMList() // Calling CMList function under `windowsnode`. 
}

The function CMList is defined as below:

void CMList(String eList,String pLists)
  stage('Generate Email List To Be Notified') {
      if(!((currentBuild.currentresult).contains('UNSTABLE'))){
          eList = eList + ";" + pLists
      }
      echo 'Notify to users - '+ eList
  }

I want to create a function as CMList that consists of a stage in groovy . But this function throws the error as

'No such DSL method 'createEmailList' found among steps [ArtifactoryGradleBuild, MavenDescriptorStep, addBadge'....

What I have tried:

I tried not to mention the datatype in arguments of function and also tried not to use if conditional as start , rather I prepended `script{} ` block before if conditional but no luck

void CMList(String eList,String pLists)
  stage('Generate Email List To Be Notified') {
      if(!((currentBuild.currentresult).contains('UNSTABLE'))){
          eList = eList + ";" + pLists
      }
      echo 'Notify to users - '+ eList
  }