The InstallStatus class is an abstract class that defines all of the install status states that are available in Craft during installation.
This class is a poor man's version of an enum, since PHP does not have support for native enumerations.
See also http://craftcms.com
# Public Methods
|isValidName()||Checks to see if the given name is valid in the enum.|
|isValidValue()||Checks to see if the given value is valid in the enum.|