class Thor

def method_exclusive(*args, &block)


will be raised.
If you give "--one" and "--two" at the same time ExclusiveArgumentsError

exclusive :one, :two
option :two
option :one

Or

end
option :two
option :one
exclusive do

==== Examples

options:: :for is applied for previous defined command.
Array[Thor::Option.name]
==== Parameters

a previous defined command.
If :for is given as option, it allows you to change the options from

block and arguments. You can declare options as the outside of the block.
Adds and declares option group for exclusive options in the 
def method_exclusive(*args, &block)
  register_options_relation_for(:method_options,
                                :method_exclusive_option_names, *args, &block)
end