title: How to enable concurrent build from Jenkins pipeline
body: <p>Are there any Jenkins properties to enable concurrent builds from within a pipeline? My pipeline disables concurrent builds for one node with <code>properties([disableConcurrentBuilds()])</code> and I would like to re-enable it when run on a different node.</p>
  
  <p>I have tried <code>properties([enableConcurrentBuilds()])</code> and <code>properties([concurrentBuild()])</code> but both are invalid options.</p>