register uri against this name.
test if this uri is registered against this name
Override to display the default values of the command options. (similar to arguments, but displays the default values).
For example:
def defaults_str --no-gems-first --no-all end
Return an Array of Specifications contained within the gem_home we’ll be installing into.
Extracts only the bin/ files from the gem into the gem directory. This is used by default gems to allow a gem-aware stub to function without the full gem installed.
Creates an installer for spec that will install into gem_home. If user is true a user-install will be performed.
Verifies entry in a .gem file.
Return the list of all array-oriented instance variables.
Return the list of all instance variables.
Is name a required attribute?