/**
  * Identify all registered modifications in chains.
  *
  * @param chains query {@link Chain}s.
  */
 public void identify(final List<Chain> chains) {
   identify(chains, ProteinModificationRegistry.allModifications());
 }
 /**
  * Identify all registered modifications in a structure.
  *
  * @param structure
  */
 public void identify(final Structure structure) {
   identify(structure, ProteinModificationRegistry.allModifications());
 }