def manifest=(hash)
      return unless hash
      raise "Input should be Hash" unless hash.is_a? Hash
      @manifest.merge! VCAP.symbolize_keys(hash)
    end
def manifest=(hash)
      return unless hash
      raise "Input should be Hash" unless hash.is_a? Hash
      @manifest.merge! VCAP.symbolize_keys(hash)
    end
add +hash+ to manifest file.