/**
  * Remove graphs from a graph provider. Can be called after starting the reporter.
  *
  * @param provider The graph provider to remove.
  */
 public void removeGraphs(final MuninGraphProvider provider) {
   mergingGraphProvider.removeProvider(provider);
 }
 /**
  * Add graphs from a graph provider. Can be called after starting the reporter.
  *
  * @param provider The graph provider to get graphs from.
  */
 public void addGraphs(final MuninGraphProvider provider) {
   mergingGraphProvider.addProvider(provider);
 }