You are not reading the current version of this documentation. 5.x is the current version.| docs.openzeppelin.com
While the simplicity of ownership can be useful for simple systems or quick prototyping, different levels of authorization are often needed. You may want for an account to have permission to ban users from a system, but not create new tokens. Role-Based Access Control (RBAC) offers flexibility in this regard.| docs.openzeppelin.com