package uk.ac.ic.wlgitbridge.snapshot.base;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.http.BasicAuthentication;
import com.google.api.client.http.HttpRequest;

import java.io.IOException;

/**
 * Created by Winston on 06/11/14.
 */
public abstract class SnapshotAPIRequest<T extends Result> extends Request<T> {

    private static String BASE_URL;

    private final Credential oauth2;

    public SnapshotAPIRequest(
            String projectName,
            String apiCall,
            Credential oauth2
    ) {
        super(BASE_URL + projectName + apiCall);
        this.oauth2 = oauth2;
    }

    @Override
    protected void onBeforeRequest(
            HttpRequest request
    ) throws IOException {
        if (oauth2 != null) {
            request.setInterceptor(request1 -> {
                oauth2.intercept(request1);
            });
        }
    }

    /* baseURL ends with / */
    public static void setBaseURL(String baseURL) {
        BASE_URL = baseURL + "docs/";
    }

}

package uk.ac.ic.wlgitbridge.snapshot.base;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.http.BasicAuthentication;
import com.google.api.client.http.HttpRequest;

import java.io.IOException;

/**
 * Created by Winston on 06/11/14.
 */
public abstract class SnapshotAPIRequest<T extends Result> extends Request<T> {

    private static String BASE_URL;

    private final Credential oauth2;

    public SnapshotAPIRequest(
            String projectName,
            String apiCall,
            Credential oauth2
    ) {
        super(BASE_URL + projectName + apiCall);
        this.oauth2 = oauth2;
    }

    @Override
    protected void onBeforeRequest(
            HttpRequest request
    ) {
        if (oauth2 != null) {
            request.setInterceptor(request1 -> {
                oauth2.intercept(request1);
            });
        }
    }

    /* baseURL ends with / */
    public static void setBaseURL(String baseURL) {
        BASE_URL = baseURL + "docs/";
    }

}

Remove exception from signature