How .ToArrays() works????????

Question

https://code.sololearn.com/c7d0L2Pq1Pfd/?ref=app

In this code i noticed that the program doesnt declare an array.
Ex.

string[] c = coffee.Keys.ToArray();

But instead it used the foreach loop even there is no declared array:

foreach(string s in coffee.Keys.ToArray());

So how does the .ToArray() method transfers the Keys of the Dictionary to an array, even it doesnt declare an array?

Answer 1

I haven't seen the source code but ToArray method must be creating a new array with values as keys and returning that array.