getErrorLog

% Open the example model
openExample('sldemo_fuelsys')

% Create an slmetric.Engine object
metric_engine = slmetric.Engine();

% Specify model for metric analysis
setAnalysisRoot(metric_engine, 'Root', 'sldemo_fuelsys');

% Collect model metrics for only the analysis root
metricID = 'mathworks.metrics.SimulinkBlockCount';
execute(metric_engine, metricID);

metricLog = getErrorLog(metric_engine);
disp(metricLog);