code: func (c *CloudFormation) ExecuteChangeSet(input *ExecuteChangeSetInput) (*ExecuteChangeSetOutput, error) {
  	req, out := c.ExecuteChangeSetRequest(input)
  	return out, req.Send()
  }
docs: // ExecuteChangeSet API operation for AWS CloudFormation.
  //
  // Updates a stack using the input information that was provided when the specified
  // change set was created. After the call successfully completes, AWS CloudFormation
  // starts updating the stack. Use the DescribeStacks action to view the status
  // of the update.
  //
  // When you execute a change set, AWS CloudFormation deletes all other change
  // sets associated with the stack because they aren't valid for the updated
  // stack.
  //
  // If a stack policy is associated with the stack, AWS CloudFormation enforces
  // the policy during the update. You can't specify a temporary stack policy
  // that overrides the current policy.
  //
  // Returns awserr.Error for service API and SDK errors. Use runtime type assertions
  // with awserr.Error's Code and Message methods to get detailed information about
  // the error.
  //
  // See the AWS API reference guide for AWS CloudFormation's
  // API operation ExecuteChangeSet for usage and error information.
  //
  // Returned Error Codes:
  //   * ErrCodeInvalidChangeSetStatusException "InvalidChangeSetStatus"
  //   The specified change set can't be used to update the stack. For example,
  //   the change set status might be CREATE_IN_PROGRESS, or the stack status might
  //   be UPDATE_IN_PROGRESS.
  //
  //   * ErrCodeChangeSetNotFoundException "ChangeSetNotFound"
  //   The specified change set name or ID doesn't exit. To view valid change sets
  //   for a stack, use the ListChangeSets action.
  //
  //   * ErrCodeInsufficientCapabilitiesException "InsufficientCapabilitiesException"
  //   The template contains resources with capabilities that weren't specified
  //   in the Capabilities parameter.
  //
  //   * ErrCodeTokenAlreadyExistsException "TokenAlreadyExistsException"
  //   A client request token already exists.
  //
  // See also, https://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/ExecuteChangeSet