Series of Integral returns evaluated expansion

[Upabjojr]

Consider the difference:

In [20]: Derivative(sin(x), x).series(x)
Out[20]: 
  ⎛  5⎞     ⎛  3 ⎞                
d ⎜ x ⎟   d ⎜-x  ⎟   d        ⎛ 6⎞
──⎜───⎟ + ──⎜────⎟ + ──(x) + O⎝x ⎠
dx⎝120⎠   dx⎝ 6  ⎠   dx           

In [21]: Integral(-cos(x), x).series(x)
Out[21]: 
      3     5        
     x     x     ⎛ 6⎞
-x + ── - ─── + O⎝x ⎠
     6    120        

Derivative is expanded into a series of unevaluated derivatives. Shouldn't Integral be expanded as a series of unevaluated integrals as well.

[anutosh491]

Or maybe we could do the other way round ? Does it help somewhere returning the unevaluated results ?