Setting Tenant when using Context Multitenancy
So I have configure my resources to use context multitenancy (Postgres Schemas). Migrations are working fine and creating an 
org creates an org schemaAsh queries? I have seen Ash.set_tenant/1 which takes a map as argument, what does the map look like? How is it different from Ash.Query.set_tenant/2? An also there what's called Process Context is Ash, what is it and assuming it's a data structure stored in the Process dictionary, how does it look like? Examples or pseudo code will help. Hopefully my questions are making sense 
