EC200U QuecOpen ql_embed_nor_flash_app_init() Not Run In SDK?

Hi.
I tried to run this function ql_embed_nor_flash_app_init in ql_init.c but it didn’t work.

Can anyone help me ?
and can not be found this Document PDF !
(Quectel_EC200U_Series_QuecOpen_Embeded_Flash_Partition_Adjustment_Guide)