Usability

Represents whether a command can be used, and if it should be visible.

Types

Returns the most important un-usability reason.

Returns true if the command cannot be executed.

Returns true if the command should not be visible (in help content, for example).

Returns true if the command can be executed.

Returns true if the command should be visible, even if unusable (in help content, for example).

All reasons this command might be unusable/invisible.