code: public boolean add(E e) {
  		hashCodeUpToDate = false;
  		ensureCapacityInternal(size + 1); // Increments modCount!!
  		elementData[size++] = e;
  		return true;
  	}
docs: Appends the specified element to the end of this list.
  
  @param e
  element to be appended to this list
  @return <tt>true</tt> (as specified by {@link Collection#add})