N:N Duplicate Code Generation

[DiggaTheWolf]

Hi Eric

I've a problem with duplicate code generation using the extended V2 template from 15.0.4, specifically for the Campaign entity N:N relationships. I've reverted to the template from 1.0.4 for now.

The campaigncampaign_association relationship only appears on the entity once, though, the Load_campaigncampaign_association method and Referencedcampaigncampaign_association property is generated twice, along with the duplicate campaigncampaign_association constant in the ManyToMany class.

I've attached a sample of the file.
ExtendedV2.zip

Let me know if there's anything else you need from me.