presto-spi/src/main/java/io/prestosql/spi/session/ResourceEstimates.java/ResourceEstimates/toString
class ResourceEstimates:    @Override
    public String toString()
    {
        final StringBuilder sb = new StringBuilder("ResourceEstimates{");
        sb.append("executionTime=").append(executionTime);
        sb.append(", cpuTime=").append(cpuTime);
        sb.append(", peakMemoryBytes=").append(peakMemoryBytes);
        sb.append('}');
        return sb.toString();
    }