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

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: "Returns an array of Strings containing all of the prefixes declared by this set of # attributes. The array does not include the default namespace declaration, if one exists."
- !ruby/struct:SM::Flow::VERB 
  body: " doc = Document.new("<a xmlns='foo' xmlns:x='bar' xmlns:y='twee' "+\n       "z='glorp' p:k='gru'/>")\n prefixes = doc.root.attributes.prefixes    #-> ['x', 'y']\n"
full_name: REXML::Attributes#prefixes
is_singleton: false
name: prefixes
params: ()
visibility: public