Gitlab integration with Jenkins for pipeline as code

Its not an Issue but kind of help required to implement the plugin. Currently, I am using a Jenkins file for my pipeline.

import hudson.model.*
import hudson.EnvVars
@Library('pipeline-library')_

stage('Tag SVN') {
node('build01') {
if ("${env.TagBuild}" == 'true'){
bat 'svn copy -r HEAD %RepoURL% %RepoTagsURL%/%RepoTagName% -m "Tagging at Revision"'
}
}
}

stage('Checkout') {
node('build01') {
if ("${env.Build_APP}" == 'true') {
ws('c:\\Dev') {
svnCheckout('${RepoURL}')
}
}
}

}

stage('Build and Import DAR') {
node('build01') {
if ("${env.Build_APP}" == 'true') {
visBuild3("C:\\Dev\\scripts\\Component.bld")
}

}
}

stage('Deploy') {
node('build01') {
if ("${env.Build_Common}" == 'true') {
script {
env.buildNumber = "${TagVersion}.Build${env.BUILD_NUMBER}_${ComponentTagName}"
env.packageid = "Applications/common/${env.buildNumber}"

}
xldDeploy serverCredentials: 'username', environmentId: 'Environments/AWS/Dev_Test_Envs/SysTest1/SysTest1_WildFly', packageId: env.packageid
}
}
}
}
It is working perfectly. Currently, I am using groovy to checkout code from SVN.

svnCheckout('${RepoURL}')
But I want to make this working for Gitlab. I have gone through a lot of documentation but everywhere they have integrated for freestyle project, not for the pipeline as code.

I found this document a little bit helpful but It confused me with so many options.

https://github.com/jenkinsci/gitlab-plugin#global-plugin-configuration

I am looking to start with the simple flow I want to trigger a build whenever I do commit on the git project and get the status of the Jenkins build. Could some please help me if you have any such article or guide me from where should I start?