client.tenants on a QumoClient.
list
plan narrows it to one plan
by its exact, case-sensitive name — e.g. "Enterprise" for the Enterprise
customer list. An unknown name, including "enterprise", is a 400.
Types: Tenant
create
TenantsResource.createOwned.
Types: Tenant
createOwned
Tenant
get
Tenant
update
Tenant
updateSettings
billing_email: null clears it.
Types: Tenant
delete
getUsage
TenantUsage
listInvoices
Invoice