The central classes and interfaces of OData Channel are as follows:
/IWBEP/CL_COS_LOGGER
/IWBEP/CL_MGW_ABS_DATA
/IWBEP/IF_MESSAGE_CONTAINER
/IWBEP/IF_MGW_APPL_SRV_RUNTIME
/IWBEP/IF_MGW_CONV_SRV_RUNTIME
/IWBEP/IF_MGW_ENTRY_PROVIDER
/IWBEP/IF_MGW_ODATA_EXPAND
/IWBEP/CX_MGW_BUSI_EXCEPTION
/IWBEP/IF_MGW_REQ_FUNC_IMPORT
/IWBEP/IF_MGW_REQ_FILTER
/IWBEP/IF_MGW_REQ_ENTITY_U
/IWBEP/IF_MGW_REQ_ENTITY_D
/IWBEP/IF_MGW_REQ_ENTITY_C
/IWBEP/IF_MGW_REQ_ENTITY_P
/IWBEP/IF_MGW_REQ_ENTITY
/IWBEP/IF_MGW_REQ_ENTITYSET
/IWBEP/IF_MGW_EXPR_VISITOR