PySNMP: Protocol: RFC 1155: Examples

### Example of rfc1155 module usage

    >>> from pysnmp.proto import rfc1155
    >>> s = rfc1155.ObjectSyntax()
    >>> s
    ObjectSyntax(simple=SimpleSyntax(empty=Null(None)))
    >>> s['simple']['string'] = rfc1155.OctetString('foobar')
    >>> s.encode()
    '\004\006foobar'
    >>>
    >>> s2 = rfc1155.ObjectSyntax()
    >>> s2
    ObjectSyntax(simple=SimpleSyntax('empty'=Null(None)))
    >>> s2.decode(s.encode())
    ''
    >>> s2
    ObjectSyntax(simple=SimpleSyntax(string=OctetString('foobar')))
    >>>