1：使用代码定义方法和传入，传出参数。

  methods GET_PARTNER_LIST_FROM_DB
    importing
      !IV_OBJECT_NUMBER type J_OBJNR
    returning
      value(RT_PARTNER) type CRMS4T_EQUI_PARTNER_IL_ATTR .
  methods CONVERT_TO_S4_BP_INFO
    importing
      !IV_PARTNER type BU_PARTNER
      !IV_PARTNER_FCT type CRMT_PARTNER_FCT
    exporting
      !EV_S4_PARTNER type I_PARNR
      !EV_S4_PARTNER_FCT type PARVW .