public Builder setSharedCache(final boolean sharedCache) {
            this.sharedCache = sharedCache;
            return this;
        }
Sets whether the cache should behave as a shared cache or not.
@param sharedCache true to behave as a shared cache, false to
behave as a non-shared (private) cache. To have the cache
behave like a browser cache, you want to set this to {@code false}.

@return this instance.
httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/CacheConfig.java