Sets the resolver timeouts. This may be a single positive number or an array of positive numbers representing timeouts in seconds. If an array is specified, a DNS
request will retry and wait for each successive interval in the array until a successful response is received. Specifying nil
reverts to the default timeouts:
Example:
dns.timeouts = 3
Whether an attlist declaration includes the given attribute definition
if attlist_decl.include? "xmlns:foobar"
Returns a copy of this attribute
Make a copy of this object
Examples
c = CData.new( "Some text" ) d = c.clone d.to_s # -> "Some text"
Should be obvious
@return the DocType
child of the document, if one exists, and nil otherwise.