Currently if you try to use multiple clients in same entity, entity will define methods only from the latest client. As in: ```ruby class StubClient < ApiStruct::Client def foo # do something end end class AnotherStubClient < ApiStruct::Client def bar # do something end end class StubEntity < ApiStruct::Entity client_service StubClient client_service AnotherStubClient end ``` It will complain: ```ruby > StubEntity.foo NoMethodError: undefined method `foo' for #<AnotherStubClient:0x00000000019128e0> ``` See also: https://github.com/rubygarage/api_struct/issues/13