class SimpleForm::ActionViewExtensions::CheckBoxBuilder

def check_box(extra_html_options={})

:nodoc:
Handles generating an instance of check box + label for collection_check_boxes. 
def check_box(extra_html_options={})
  html_options = extra_html_options.merge(@input_html_options)
  @form_builder.check_box(@method_name, html_options, @value, nil)
end