title: How to block selected artifacts in Nexus?
body: <p>I am very new to Nexus repositories.<br>
  I am trying to configure Nexus is such a way that I can tell Nexus to not use some certain artifacts which are already in the repository.</p>
  
  <p>I know I can block the artifacts by using pom.xml. But, is there any way to do it by using Nexus repository interface?</p>
  
  <p>Thanks!</p>