Parse successful
<?xml version="1.0" encoding="ISO-8859-1"?>
<Dataset xmlns="http://xml.opendap.org/ns/DAP/4.0#" xml:base="file:dap4/vol_1_ce_1.xml" dapVersion="4.0" dmrVersion="1.0" name="vol_1_ce_1">
    <Int32 name="u"/>
    <Int32 name="v"/>
    <Structure name="Point">
        <Int32 name="x"/>
        <Int32 name="y"/>
    </Structure>
</Dataset>

<?xml version="1.0" encoding="ISO-8859-1"?>
<Dataset xmlns="http://xml.opendap.org/ns/DAP/4.0#" dapVersion="4.0" dmrVersion="1.0" name="function_results">
    <Float64 name="x">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>1d0ab9ed</Value>
        </Attribute>
    </Float64>
</Dataset>

The data:
{ 12345678.9 }