string id(int a_size = 32, boolean a_unsafeFirstChar = true)
Creates a string with random characters. The first symbol is the sign _
int a_size - Sets the number of random characters
boolean a_unsafeFirstChar - [Since 1.1.55] If it is true, then the first character is equal to "_", if it is false, then the first character has a random value from 0 to f.
Random character string. The first symbol is the sign _