question: return if this error page is a global one matches all unmatched status and exception types . concode_field_sep Class<? extends Throwable> exception concode_elem_sep String path concode_elem_sep HttpStatus status concode_field_sep String getExceptionName concode_elem_sep Class<? extends Throwable> getException concode_elem_sep int getStatusCode concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep String getPath concode_elem_sep HttpStatus getStatus
target: boolean function ( ) { return ( this . status == null && this . exception == null ) ; }