title: Patch Java class import to use a different class instead
body: <p>We have a third party library that transitively pulls in <code>backport-util-concurrent:backport-util-concurrent</code>. We can use Maven to ban that, but the third party library code imports classes from the <code>edu.emory.mathcs.backport.java.util.concurrent</code> package.</p>
  <p>Does Java or Maven provide a way to force any <code>edu.emory.mathcs.backport.java.util...</code> import to instead use <code>java.util...</code>? Preferably that substitution could be forced at both compile time and runtime, so that we can be sure the API is being implemented fully enough to be dropped in without obvious breakage.</p>