test1.rb

require 'plist'

class ClassOne
  def initialize
  
  end
  
  def do_something
    h = {}
    h['key'] = 'value'
    
    h.to_plist # the 'to_plist' method from 'cfpropertylist' is getting invoked.. I don't want that
  end
  
end

test2.rb

require './test1'

require 'cfpropertylist'

c = ClassOne.new
c.do_something

plist = CFPropertyList::List.new(:data => 'some_data')