Capabilities.

get supported connection capabilities and their current state :returns: :protobuf:msg:`Mysqlx.Connection::Capabilities` or :protobuf:msg:`Mysqlx::Error` .

sets connection capabilities atomically only provided values are changed, other values are left unchanged.

a Capability a tuple of a ``name`` and a :protobuf:msg:`Mysqlx.Datatypes::Any`.

announce to the server that the client wants to close the connection it discards any session state of the server :Returns: :protobuf:msg:`Mysqlx::Ok`.