question: public String toString ( ) { if ( certPolicies == null ) { return "" ; } StringBuilder sb = new StringBuilder ( super . toString ( ) ) ; sb . append ( "CertificatePolicies [\n" ) ; for ( PolicyInformation info : certPolicies ) { sb . append ( info . toString ( ) ) ; } sb . append ( "]\n" ) ; return sb . toString ( ) ; }
target:  Return the extension as user readable string.