the metadata of the feature.
the metadata of the feature.
Executes the block if the feature is active
Executes the block if the feature is active
the return type of the block
a some if the block has been executed, containing the result of the block
Executes the block if the feature is not active
Executes the block if the feature is not active
the return type of the block
a some if the block has been executed, containing the result of the block