Enum class to represent the different Cause Codes that are received when an invitation is refused with a given code
is the numerical representation of the cause, eg. 17 -> USER_BUSY
Returns a representation of an immutable list of all enum entries, in the order they're declared.
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
Returns an array containing the constants of this enum type, in the order they're declared.