class Aws::RestBodyHandler

def build_body(context)
  input = context.operation.input
  case
  when input.nil?
    nil
  when streaming?(input)
    context.params[input.payload]
  when input.payload
    params = context.params[input.payload] || {}
    serialize_params(input.payload_member, params) unless params.empty?
  else
    params = body_params(input, context.params)
    serialize_params(input, params) unless params.empty?
  end
end