public SimpleResponseBuilder setBody(final byte[] content, final ContentType contentType) {
        this.body = SimpleBody.create(content, contentType);
        return this;
    }
Sets the body.

@param content the body content.
@param contentType the body content-type.
@return this instance.
httpclient5/src/main/java/org/apache/hc/client5/http/async/methods/SimpleResponseBuilder.java