Nexus plugin in pipeline

pipeline {
    agent any
    stages {
        stage('Install') {
             steps {
                sh 'mvn clean install -DskipTests'
            }
        }

        stage('Upload artifact') {
           steps {
               nexusArtifactUploader artifacts: [[artifactId: 'add-project-internship-2018', classifier: '', file: 'add-project-internship-2018-0.0.1-SNAPSHOT.war', type: 'war']],
               credentialsId: '9d977555-9613-4485-8c0c-a25b72a316e3',
               groupId: 'com.endava',
               nexusUrl: 'nexus.endava.net/repository/Intens_2018_firs/',
               nexusVersion: 'nexus3',
               protocol: 'http',
               repository: 'Intens_2018_firs',
               version: '0.0.1'
           }
        }

    }
}