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.....................................................................................................................................--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Returns the namespace URL, if defined, or nil otherwise
- !ruby/struct:SM::Flow::VERB 
  body: " e = Element.new(&quot;el&quot;)\n e.add_attributes({&quot;xmlns:ns&quot;, &quot;http://url&quot;})\n e.namespace( &quot;ns&quot; )              # -&gt; &quot;http://url&quot;\n"
full_name: REXML::Attribute#namespace
is_singleton: false
name: namespace
params: (arg=nil)
visibility: public