question: public Boolean consumeBooleanConstantAttribute ( String name ) throws UnableToCompleteException { String value = consumeRawAttribute ( name ) ; if ( value == null ) { return null ; } if ( value . equals ( "true" ) || value . equals ( "false" ) ) { return Boolean . valueOf ( value ) ; } logger . die ( this , "%s must be \"true\" or \"false\"" , name ) ; return null ; }
target:  Consumes the named attribute as a boolean expression. This will not accept {field.reference} expressions. Useful for values that must be resolved at compile time, such as generated annotation values.