Returns the specializers of a function. The length of the sequence will equal the number of required arguments of function. The first element of the sequence will be the specializer of the first argument of function, the second will be the specializer of the second argument, and so on.
The sequence returned should never be destructively modified. Doing so may cause unpredictable behavior.
sealed
| function | An instance of <function>. |
| sequence | An instance of <sequence>. |