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# ->render()
 -  renders a select tag with the value selected
 -  renders all choices as option tags
 -  always generate a value attribute, even for empty keys
 -  always generate a value attribute, even for empty keys
# multiple select
 -  automatically adds a multiple HTML attributes if multiple is true
 -  automatically adds a [] at the end of the name if multiple is true
 -  renders a select tag with the value selected
 -  renders a select tag with the value selected
 -  automatically does not add a [] at the end of the name if multiple is true and the name already has one
# optgroup support
 -  has support for optgroups tags
 -  throws an RuntimeException if you don't pass a choices option
# choices are translated
 -  translates the options
 -  translates the options
# optgroup support with translated choices
 -  translates the options
 -  translates the options
# choices as a callable
 -  accepts a sfCallable as a choices option
# attributes
 -  does not pass the select HTML attributes to the option tag
 -  does not pass the select HTML attributes to the option tag
 -  does not pass the select HTML attributes to the option tag
 -  does not pass the select HTML attributes to the option tag
# __clone()
 -  changes the choices is a callable and the object is an instance of the current object
 -  changes nothing if the choices is a callable and the object is not an instance of the current object
# Looks like everything went fine.