private java.lang.String key ( TYPE_1 key ) throws TYPE_2 { if ( key == null ) return null ; return ( ( TYPE_3 ) ( key ) ) . METHOD_1 ( ) ; } 

private java.lang.String string ( TYPE_1 key ) throws TYPE_2 { if ( key == null ) return null ; return ( ( TYPE_3 ) ( key ) ) . METHOD_1 ( ) ; } 
