presto-thrift-api/src/main/java/io/prestosql/plugin/thrift/api/PrestoThriftBlock.java/PrestoThriftBlock/getDoubleData
class PrestoThriftBlock:    @Nullable
    @ThriftField(value = 3, requiredness = OPTIONAL)
    public PrestoThriftDouble getDoubleData()
    {
        return doubleData;
    }