# ega_gax v0.5.0 - Table of Contents > Google API Extensions for Elixir - maintained drop-in fork of google_gax (archived upstream). Shared runtime for the generated GoogleApi.* client libraries. Fixes Tesla >= 1.18.3 compatibility. ## Modules - [GoogleApi.Gax.Connection](GoogleApi.Gax.Connection.md): This module helps define and configure server connection. - [GoogleApi.Gax.DataWrapper](GoogleApi.Gax.DataWrapper.md): Module and struct to help serialize/deserialize "data-wrapped" responses. - [GoogleApi.Gax.ModelBase](GoogleApi.Gax.ModelBase.md): This module helps you quickly and concisely define API models. - [GoogleApi.Gax.Request](GoogleApi.Gax.Request.md): This module is used to build an HTTP request - [GoogleApi.Gax.Response](GoogleApi.Gax.Response.md): This module helps decode Tesla responses