Modifies the first argument in place to hold the result of
adding the second argument. Avoids allocating a new Ciphertext,
which matters in tight loops or when ciphertext memory
footprint is a concern.
Usage
eval_add_in_place(x, ...)
Arguments
x
A Ciphertext (modified in place).
...
Method-specific arguments: y — a Ciphertext,
Plaintext, or numeric scalar to add into x.
