Pins the gem name to the given source. Adding a gem with the same name from a different source will raise an exception.
Checks if there are duplicate links with the same type and hreflang attributes that have an alternate (or empty) rel attribute
Raises a TooMuchTagError if there are duplicates found
Add a list of extra arguments for the given command. args may be an array or a string to be split on white space.
Accessor for the specific extra args hash (self initializing).
Invoke the command with the given list of normal arguments and additional build arguments.
Adds a section with title and content to the parser help view. Used for adding command arguments and default arguments.