Get Branch invalid/non-standard configuration from Jenkins

jenkins-get-invalid-branch-list.groovy

                    import hudson.model.*
import hudson.maven.MavenModuleSet  
import hudson.tasks.*
import hudson.plugins.git.GitSCM
//List valid branches that can be built  
def validBranches = ["develop","master"]
Hudson.instance.items.each { 
  if(it.getScm() instanceof GitSCM) {
    Set branchNames = []
    it.getScm().getBranches().each { b -> 
      if(!validBranches.contains(b.getName().replaceAll("\\*","").replaceAll("/", ""))) {
      	branchNames.add(b.getName().replaceAll("\\*","").replaceAll("/", ""))
      }
      if(!branchNames.isEmpty()) {
          println(it.name + " - " +branchNames)
      }
    }
  }
}