# File lib/rake.rb, line 104
104:     def clone
105:       sibling = self.class.new
106:       instance_variables.each do |ivar|
107:         value = self.instance_variable_get(ivar)
108:         sibling.instance_variable_set(ivar, value.rake_dup)
109:       end
110:       sibling
111:     end