o a LogEntryDescriptor that describes the log's template.</td></tr><a name="aspect.AccessLogsParams.AccessLog.templateExpressions"></a><tr><td><code>templateExpressions</code></td><td>repeated map&lt;string, string&gt;</td><td>Map of template variable name to expression for the descriptor's logTemplate. At run time each expression will be evaluated, and together they will provide values for the log's template string. Labels and template expressions do not mix: if the result of some expression is needed for 