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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 get_file(self, fid):
 """Get file from WeedFS. Returns file content. May be problematic for large files as content is stored in memory. Args: **fid**: File identifier <volume_id>,<file_name_hash> Returns: Content of the file with provided fid or None if file doesn't exist on the server .. versionadded:: 0.3.1 """

        url = self.get_file_url(fid)
        return self.conn.get_raw_data(url)