private void addGrantedAuthorityCollection ( Collection < GrantedAuthority > result , Object value ) { if ( value == null ) { return ; } if ( value instanceof Collection < ? > ) { addGrantedAuthorityCollection ( result , ( Collection < ? > ) value ) ; } else if ( value instanceof Object [ ] ) { addGrantedAuthorityCollection ( result , ( Object [ ] ) value ) ; } else if ( value instanceof String ) { addGrantedAuthorityCollection ( result , ( String ) value ) ; } else if ( value instanceof GrantedAuthority ) { result . add ( ( GrantedAuthority ) value ) ; } else { throw new IllegalArgumentException ( "Invalid object type: " + value . getClass ( ) . getName ( ) ) ; } }
Convert the given value to a collection of Granted Authorities adding the result to the given result collection .