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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _ValidateCacheEntryHeader(self, cache_entry_header):
 """Determines whether the values in the cache entry header are valid. Args: cache_entry_header (firefox_cache1_entry_header):
 cache entry header. Returns: bool: True if the cache entry header is valid. """

    return (
        cache_entry_header.request_size > 0 and
        cache_entry_header.request_size < self._MAXIMUM_URL_LENGTH and
        cache_entry_header.major_format_version == 1 and
        cache_entry_header.last_fetched_time > 0 and
        cache_entry_header.fetch_count > 0)