@type t() :: %Gleanex.Client.Customer{
  company: Gleanex.Client.Company.t(),
  contractAnnualRevenue: number() | nil,
  documentCounts: map() | nil,
  domains: [String.t()] | nil,
  id: String.t(),
  mergedCustomers: [t()] | nil,
  metadata: Gleanex.Client.CustomerMetadata.t() | nil,
  notes: String.t() | nil,
  poc: [Gleanex.Client.Person.t()] | nil,
  startDate: Date.t() | nil
}