/*
 * Copyright 2020, TeamDev. All rights reserved.
 *
 * Redistribution and use in source and/or binary forms, with or without
 * modification, must retain the above copyright notice and the following
 * disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package io.spine.core;

/**
 * Mixin interface for the {@link Response} objects.
 */
public interface ResponseMixin extends ResponseOrBuilder {

    /**
     * Verifies if this response has the {@link Status.StatusCase#OK OK} status.
     */
    default boolean isOk() {
        return getStatus().getStatusCase() == Status.StatusCase.OK;
    }

    /**
     * Verifies if this response has the {@link Status.StatusCase#ERROR ERROR} status.
     */
    default boolean isError() {
        return getStatus().getStatusCase() == Status.StatusCase.ERROR;
    }
}

@@ -1030,16 +1030,45 @@
 .core;%0A%0A
+import io.spine.base.Error;%0A%0A
 /**%0A * M
@@ -1592,11 +1592,215 @@
 R;%0A    %7D
+%0A%0A    /**%0A     * Obtains the error associated with the response or default instance is the response is not%0A     * an error.%0A     */%0A    default Error error() %7B%0A        return getStatus().getError();%0A    %7D
 %0A%7D%0A

Add shortcut method for obtaining the error