# File lib/rake.rb, line 107
107:     def clone
108:       sibling = self.class.new
109:       instance_variables.each do |ivar|
110:         value = self.instance_variable_get(ivar)
111:         sibling.instance_variable_set(ivar, value.rake_dup)
112:       end
113:       sibling
114:     end