code: @Override
      public AssignVolumeResult assignVolume(AssignVolumeRequest request) {
          request = beforeClientExecution(request);
          return executeAssignVolume(request);
      }
docs: <p>
  Assigns one of the stack's registered Amazon EBS volumes to a specified instance. The volume must first be
  registered with the stack by calling <a>RegisterVolume</a>. After you register the volume, you must call
  <a>UpdateVolume</a> to specify a mount point before calling <code>AssignVolume</code>. For more information, see
  <a href="http://docs.aws.amazon.com/opsworks/latest/userguide/resources.html">Resource Management</a>.
  </p>
  <p>
  <b>Required Permissions</b>: To use this action, an IAM user must have a Manage permissions level for the stack,
  or an attached policy that explicitly grants permissions. For more information on user permissions, see <a
  href="http://docs.aws.amazon.com/opsworks/latest/userguide/opsworks-security-users.html">Managing User
  Permissions</a>.
  </p>
  
  @param assignVolumeRequest
  @return Result of the AssignVolume 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.AssignVolume
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/opsworks-2013-02-18/AssignVolume" target="_top">AWS API
  Documentation</a>