gistfile1.rb

module Name

  def client
    ApiClient.new
  end

  # this puts the instance method 'client' on Name.
  # otherwise you should have said def self.client
  extend self

  class Product
 
    def get_something
      # this is an insane but general way to do this.
      client = Module.nesting[-1].client

      # or just do it like this
      client = Name.client
    end
 
  end
 
end