code: public void addAlias(Object alias) {
  	  if (lock == SET) {
  		 throw new IllegalStateException("EntryInfo is locked");
  	  }
  	  if (alias != null && !alias.equals("")) {
  		  aliasList.add(alias);
  	  }
     }
docs: This unions a new alias into the aliasList variable.
  
  @param alias The new alias.
  @ibm-private-in-use