public void setControllingSequence(String controllingSequence)
controllingSequence determines if the choice for this matching bean is defined
within the bean or within another bean in a list of beans. If the controllingSequence
is "Self", the choice comes from within this bean. If the controllingSequence is
"Distractor", there is no choice for this bean. Otherwise, use the value of
controllingSequence to locate the bean that has the choice test.