Does the target have the feature feature enabled?
feature
Parameters:
Specifies a proposed feature.
Returns:
Returns true if the current target has the features feature and the features is enabled.
true
Return the current build target.
Returns the current build target.
Is the current target proposal?
proposal
Specifies a proposed target.
Returns true if the current target matches the parameter proposal.
Attempts to return arbitrary key values for the key key for the current target.
key
Specifies the desired key to look up.
Returns the value for key in the :targets structure, or nil if it doesn’t exist.
:targets
nil