question: @ Override @ SideEffectFree public String formatAnnotationString ( Collection < ? extends AnnotationMirror > annos , boolean printInvisible ) { StringBuilder sb = new StringBuilder ( ) ; for ( AnnotationMirror obj : annos ) { if ( obj == null ) { ErrorReporter . errorAbort ( "AnnotatedTypeMirror.formatAnnotationString: found null AnnotationMirror!" ) ; } if ( isInvisibleQualified ( obj ) && ! printInvisible ) { continue ; } formatAnnotationMirror ( obj , sb ) ; sb . append ( " " ) ; } return sb . toString ( ) ; }
target:  Creates a space String of each annotation in annos separated by a single space character, obeying the printInvisible parameter.