code: public void put(Object tree, int flags, int startPc, int endPc) {
          entries.append(new CRTEntry(tree, flags, startPc, endPc));
      }
docs: Create a new CRTEntry and add it to the entries.
  @param tree     The tree or the list of trees for which
  we are storing the code pointers.
  @param flags    The set of flags designating type of the entry.
  @param startPc  The starting code position.
  @param endPc    The ending code position.