presto-memory/src/main/java/io/prestosql/plugin/memory/MemoryConfig.java/MemoryConfig/setSplitsPerNode
class MemoryConfig:    @Config("memory.splits-per-node")
    public MemoryConfig setSplitsPerNode(int splitsPerNode)
    {
        this.splitsPerNode = splitsPerNode;
        return this;
    }