This interface defines virtual methods for each of the user-facing overload sets in EssentialContactsServiceClient. This allows users to inject custom behavior (e.g., with a Google Mock object) when writing tests that use objects of type EssentialContactsServiceClient.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the \u003ccode\u003eEssentialContactsServiceConnection\u003c/code\u003e class, which is used in conjunction with \u003ccode\u003eEssentialContactsServiceClient\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eEssentialContactsServiceConnection\u003c/code\u003e class defines virtual methods for each user-facing overload set in \u003ccode\u003eEssentialContactsServiceClient\u003c/code\u003e, allowing for custom behavior injection during testing.\u003c/p\u003e\n"],["\u003cp\u003eThe page lists multiple versions of the \u003ccode\u003eEssentialContactsServiceConnection\u003c/code\u003e class, ranging from the latest release candidate, 2.37.0-rc, down to version 2.12.0.\u003c/p\u003e\n"],["\u003cp\u003eKey functions of \u003ccode\u003eEssentialContactsServiceConnection\u003c/code\u003e are detailed, including \u003ccode\u003eCreateContact\u003c/code\u003e, \u003ccode\u003eUpdateContact\u003c/code\u003e, \u003ccode\u003eListContacts\u003c/code\u003e, \u003ccode\u003eGetContact\u003c/code\u003e, \u003ccode\u003eDeleteContact\u003c/code\u003e, \u003ccode\u003eComputeContacts\u003c/code\u003e, and \u003ccode\u003eSendTestMessage\u003c/code\u003e, alongside their parameters and return types.\u003c/p\u003e\n"],["\u003cp\u003eThe page also provides links to create an instance of the class, and a Mock version of the class.\u003c/p\u003e\n"]]],[],null,["# Class EssentialContactsServiceConnection (2.19.0)\n\nVersion 2.19.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/essentialcontacts/latest/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.41.0](/cpp/docs/reference/essentialcontacts/2.41.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.40.0](/cpp/docs/reference/essentialcontacts/2.40.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.39.0](/cpp/docs/reference/essentialcontacts/2.39.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.38.0](/cpp/docs/reference/essentialcontacts/2.38.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.37.0](/cpp/docs/reference/essentialcontacts/2.37.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.36.0](/cpp/docs/reference/essentialcontacts/2.36.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.35.0](/cpp/docs/reference/essentialcontacts/2.35.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.34.0](/cpp/docs/reference/essentialcontacts/2.34.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.33.0](/cpp/docs/reference/essentialcontacts/2.33.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.32.0](/cpp/docs/reference/essentialcontacts/2.32.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.31.0](/cpp/docs/reference/essentialcontacts/2.31.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.30.0](/cpp/docs/reference/essentialcontacts/2.30.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.29.0](/cpp/docs/reference/essentialcontacts/2.29.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.28.0](/cpp/docs/reference/essentialcontacts/2.28.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.27.0](/cpp/docs/reference/essentialcontacts/2.27.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.26.0](/cpp/docs/reference/essentialcontacts/2.26.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.25.1](/cpp/docs/reference/essentialcontacts/2.25.1/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.24.0](/cpp/docs/reference/essentialcontacts/2.24.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.23.0](/cpp/docs/reference/essentialcontacts/2.23.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.22.1](/cpp/docs/reference/essentialcontacts/2.22.1/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.21.0](/cpp/docs/reference/essentialcontacts/2.21.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.20.0](/cpp/docs/reference/essentialcontacts/2.20.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.19.0](/cpp/docs/reference/essentialcontacts/2.19.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.18.0](/cpp/docs/reference/essentialcontacts/2.18.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.17.0](/cpp/docs/reference/essentialcontacts/2.17.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.16.0](/cpp/docs/reference/essentialcontacts/2.16.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.15.1](/cpp/docs/reference/essentialcontacts/2.15.1/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.14.0](/cpp/docs/reference/essentialcontacts/2.14.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.13.0](/cpp/docs/reference/essentialcontacts/2.13.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection)\n- [2.12.0](/cpp/docs/reference/essentialcontacts/2.12.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection) \nThe [`EssentialContactsServiceConnection`](/cpp/docs/reference/essentialcontacts/2.19.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceConnection) object for [`EssentialContactsServiceClient`](/cpp/docs/reference/essentialcontacts/2.19.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceClient). \nThis interface defines virtual methods for each of the user-facing overload sets in [`EssentialContactsServiceClient`](/cpp/docs/reference/essentialcontacts/2.19.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceClient). This allows users to inject custom behavior (e.g., with a Google Mock object) when writing tests that use objects of type [`EssentialContactsServiceClient`](/cpp/docs/reference/essentialcontacts/2.19.0/classgoogle_1_1cloud_1_1essentialcontacts__v1_1_1EssentialContactsServiceClient).\n\nTo create a concrete instance, see [`MakeEssentialContactsServiceConnection()`](/cpp/docs/reference/essentialcontacts/2.19.0/namespacegoogle_1_1cloud_1_1essentialcontacts__v1).\n\nFor mocking, see [`essentialcontacts_v1_mocks::MockEssentialContactsServiceConnection`](/cpp/docs/reference/essentialcontacts/2.19.0/classgoogle_1_1cloud_1_1essentialcontacts__v1__mocks_1_1MockEssentialContactsServiceConnection).\n\nFunctions\n---------\n\n### virtual options()\n\n### virtual CreateContact(google::cloud::essentialcontacts::v1::CreateContactRequest const \\&)\n\n### virtual UpdateContact(google::cloud::essentialcontacts::v1::UpdateContactRequest const \\&)\n\n### virtual ListContacts(google::cloud::essentialcontacts::v1::ListContactsRequest)\n\n### virtual GetContact(google::cloud::essentialcontacts::v1::GetContactRequest const \\&)\n\n### virtual DeleteContact(google::cloud::essentialcontacts::v1::DeleteContactRequest const \\&)\n\n### virtual ComputeContacts(google::cloud::essentialcontacts::v1::ComputeContactsRequest)\n\n### virtual SendTestMessage(google::cloud::essentialcontacts::v1::SendTestMessageRequest const \\&)"]]
