code: @Override
      public DescribeVolumesResult describeVolumes(DescribeVolumesRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeVolumes(request);
      }
docs: <p>
  Describes an instance's Amazon EBS volumes.
  </p>
  <note>
  <p>
  This call accepts only one resource-identifying parameter.
  </p>
  </note>
  <p>
  <b>Required Permissions</b>: To use this action, an IAM user must have a Show, Deploy, or Manage permissions
  level for the stack, or an attached policy that explicitly grants permissions. For more information about user
  permissions, see <a
  href="http://docs.aws.amazon.com/opsworks/latest/userguide/opsworks-security-users.html">Managing User
  Permissions</a>.
  </p>
  
  @param describeVolumesRequest
  @return Result of the DescribeVolumes operation returned by the service.
  @throws ValidationException
  Indicates that a request was not valid.
  @throws ResourceNotFoundException
  Indicates that a resource was not found.
  @sample AWSOpsWorks.DescribeVolumes
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/opsworks-2013-02-18/DescribeVolumes" target="_top">AWS API
  Documentation</a>