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@ivar rdclass: The class of the rdataset
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    @ivar rdtype: The type of the rdataset
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    @ivar covers: The covered type.  Usually this value is
    dns.rdatatype.NONE, but if the rdtype is dns.rdatatype.SIG or
    dns.rdatatype.RRSIG, then the covers value will be the rdata
    type the SIG/RRSIG covers.  The library treats the SIG and RRSIG
    types as if they were a family of
    types, e.g. RRSIG(A), RRSIG(NS), RRSIG(SOA).  This makes RRSIGs much
    easier to work with than if RRSIGs covering different rdata
    types were aggregated into a single RRSIG rdataset.
    @type covers: int
    @ivar ttl: The DNS TTL (Time To Live) value
    @type ttl: int
    trdclasstrdtypetcoverstttlcCs;tt|�j�||_||_||_d|_dS(s�Create a new rdataset of the specified class and type.

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s�Convert the rdataset into DNS master file format.

@see: L{dns.name.Name.choose_relativity} for more information
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Any additional keyword arguments are passed on to the rdata
        to_text() method.

@param name: If name is not None, emit a RRs with I{name} as
        the owner name.
        @type name: dns.name.Name object
        @param origin: The origin for relative names, or None.
        @type origin: dns.name.Name object
        @param relativize: True if names should names be relativized
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@param name: The owner name of the RRset that will be emitted
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        @param file: The file to which the wire format data will be appended
        @type file: file
        @param compress: The compression table to use; the default is None.
        @type compress: dict
        @param origin: The origin to be appended to any relative names when
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        @returns: the number of records emitted
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cGst||||�S(s�Create an rdataset with the specified class, type, and TTL, and with
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@rtype: dns.rdataset.Rdataset object
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