I have a Java app and I am using Apollo Plugin

plugins {
    id 'com.apollographql.apollo' version '2.5.6'
}

I want to send 4 queries.
I want Apollo Client to send them all together, without waiting for reply from query1 before sending query2.
I am using

// client is create once and reused
ApolloClient apolloClient = ApolloClient.builder()
            .serverUrl(graphQlHost + path)
            .okHttpClient(httpClient)
            .build();

apolloClient.query(query).enqueue(new ApolloCall.Callback<T>() {...})

However, from logs and from monitoring tools it seems that the calls are execute one after another.
I didn’t find an alternative to enqueue method under ApolloClient class.

Is there a way to configure ApolloClient to send the requests as soon as they are “enqueued” or is it a single thread that reads from queue of requests and executes them sequentially?