Android : call python cloud endpoint api from android app

I have successfully created the api in cloud endpoint and deployed it in app engine. Its in python. also I have generated library and have imported in my project.Its in my import

import com.appspot.corner_fresh.fresh_api.FreshApi;

How can i access methods in my api. I have methods like fresh_api.user.insert and fresh_api.user.detail. I could not get any detailed documentation of python endpoint.

I tried this

final HttpTransport transport = AndroidHttp.newCompatibleTransport();
JsonFactory jsonFactory = new JacksonFactory();

FreshApi.Builder builder = new FreshApi.Builder( transport, jsonFactory, null );
builder.setApplicationName( appName );

FreshApi service = builder.build();

try {
     Json response = service.fresh_api.users.list( ).execute();
       Toast.makeText(getApplicationContext(), response.toString(), Toast.LENGTH_SHORT).show();
    } catch (IOException e) {
       Toast.makeText(getApplicationContext(), "sexyfghfd", Toast.LENGTH_SHORT).show();
    }

but, first I couldn't understand it. Then, what to pass as appName in builder.setApplicationName( appName );

also, its not recognising methodName in

response = service.fresh_api.users.list( ).execute(); how to execute api and get response. Thanks