Slack icon object

Defines an object containing Slack icon information to be used in a card block.

The Slack icon object must be used within the card block.

Field	Type	Description	Required?
`type`	string	Always `icon`.	Required
`name`	string	One of the following: `archive`, `book`, `bookmark`, `bot`, `bug`, `calendar`, `call`, `caret-left`, `caret-right`, `check`, `clipboard`, `code`, `comment`, `compass`, `copy`, `cube`, `download`, `edit`, `email`, `eye-closed`, `eye-open`, `file`, `flag`, `folder`, `gear`, `globe`, `heart`, `help`, `image`, `info`, `key`, `lightbulb`, `link`, `map`, `mobile`, `new-window`, `pin`, `plus`, `refine`, `refresh`, `rocket`, `save`, `screen`, `share`, `sparkle`, `star`, `star-filled`, `tag`, `thumbs-down`, `thumbs-up`, `trash`, `upload`, `user`, `warning`	Required