public boolean isGzipCompressed() {
        return gzipCompressed;
    }
Tests if entities are to be GZIP compressed ({@code true}), or not ({@code false}).

@return {@code true} if entity is to be GZIP compressed, {@code false} otherwise.
httpclient5/src/main/java/org/apache/hc/client5/http/entity/EntityBuilder.java