Convert a series expansion into a polynomial : convert convertir

convert, with the option polynom, converts a Taylor series into a polynomial. It should be used for operations like drawing the graph of the Taylor series of a function near a point.
convert takes two arguments : an expression and the option polynom.
convert replaces the order_size functions by 0 inside the expression.
Input :

convert(taylor(sin(x)),polynom)

Output :

x+1/-6*x^3+1/120*x^5+x^6*0

Input :

convert(series(sin(x),x=0,6),polynom)

Output :

x+1/-6*x^3+1/120*x^5+x^7*0