Represents an Ldap Message ID.
MessageID ::= INTEGER (0 .. maxInt) maxInt INTEGER ::= 2147483647 -- (2^^31 - 1) -- Note: The creation of a MessageID should be hidden within the creation of an RfcLdapMessage. The MessageID needs to be in sequence, and has an upper and lower limit. There is never a case when a user should be able to specify the MessageID for an RfcLdapMessage. The MessageID() class should be package protected. (So the MessageID value isn't arbitrarily run up.)