pub fn serialize<S, T>(data: T, serializer: S) -> Result<S::Ok, S::Error> where
This is supported on crate feature
data as hex string using lowercase characters.
Lowercase characters are used (e.g.
f9b4ca). The resulting string’s length
is always even, each byte in data is always encoded using two hex digits.
Thus, the resulting string contains exactly twice as many bytes as the input