Business Partner creation using Class CL_MD_BP_MAINTAIN

Greetings,

Looking for some advice on how the the Class CL_MD_BP_MAINTAIN & Method MAINTAIN can be used to create a new Vendor & a corresponding BP(for the same Vendor) that will contain 2 roles FLVN00 & FLVN01.

I have already gone through the document from SAP Help and it doesn't help me much: https://help.sap.com/viewer/5a1b852d92f6427c92b045409b8f1680/1709%20001/en-US/53872683ee3046f7ab517c1a2bcc3ab7.html

I have also read the post By senthil murugan on using the above Class & Method for creating a Customer. This post is helpful, but I am struggling with the creation of partner roles and hence seeking some advice...

Regards,

Pablo Ghosh Roy