The ServiceConnector class provides the simple interface to search
the OID record from the MIB database, get the MBean attribute value,
or set the MBean attribute value.
This interface provides the methods to set the Java object value,
get the Java object value, and check the expected Java datatype
compatible to SnmpSyntax object.
This interface provides the methods such that the implemented
class shall provide the implementation to determine if it is a right
handler to handle the SNMP message.