question: public void addClaimedSignerRole ( final String claimedSignerRole ) { if ( ( claimedSignerRole == null ) || ( claimedSignerRole . length ( ) == 0 ) ) { throw new NullPointerException ( "claimedSignerRole" ) ; } if ( claimedSignerRoles == null ) { claimedSignerRoles = new ArrayList < String > ( ) ; } claimedSignerRoles . add ( claimedSignerRole ) ; }
target:  Adds a claimed signer role