code: public ExpressionBuilder matches(final SubordinateTrigger trigger, final String compare) {
  		BooleanExpression exp = new CompareExpression(CompareType.MATCH, trigger, compare);
  		appendExpression(exp);
  
  		return this;
  	}
docs: Appends a matches test to the condition.
  
  @param trigger the trigger field.
  @param compare the value to use in the compare.
  @return this ExpressionBuilder.