class Aws::Plugins::JsonvalueConverter::Handler

def call(context)
  context.operation.input.shape.members.each do |m, ref|
    if ref['jsonvalue']
      param_value = context.params[m]
      unless param_value.respond_to?(:to_json)
        raise ArgumentError, "The value of params[#{m}] is not JSON serializable."
      end
      context.params[m] = param_value.to_json
    end
  end
  @handler.call(context)
end