public final PJsonArray getJSONArray(final String key) {
        final JSONArray val = this.obj.optJSONArray(key);
        if (val == null) {
            throw new ObjectMissingException(this, key);
        }
        return new PJsonArray(this, val, key);
    }
public final PJsonArray getJSONArray ( final String key ) { final JSONArray val = this . obj . optJSONArray ( key ) ; if ( val == null ) { throw new ObjectMissingException ( this , key ) ; } return new PJsonArray ( this , val , key ) ; }
Get a property as a json array or throw exception.

@param key the property name