CallAdapter

interface CallAdapter<R : Any!, T : Any!>

Adapts a Call with response type R into the type of T. Instances are created by a factory which is into the Retrofit instance.

abstract class Factory

Creates CallAdapter instances based on the return type of methods.

adapt	`abstract fun adapt(call: Call<R>!): T` Returns an instance of `T` which delegates to `call`.
responseType	`abstract fun responseType(): Type!` Returns the value type that this adapter uses when converting the HTTP response body to a Java object. For example, the response type for `Call<Repo>` is `Repo`. This type is used to prepare the `call` passed to `#adapt`.