question: read an instance of the second type parameter from buffer src . concode_field_sep DataType<B> typeB concode_elem_sep DataType<A> typeA concode_field_sep boolean isOrderPreserving concode_elem_sep Order getOrder concode_elem_sep boolean isNullable concode_elem_sep Class<Object> encodedClass concode_elem_sep boolean isSkippable concode_elem_sep A decodeA
target: B function ( PositionedByteRange arg0 ) { return ( B ) decode ( arg0 ) ; }