Parse successful
<?xml version="1.0" encoding="ISO-8859-1"?>
<Dataset xmlns="http://xml.opendap.org/ns/DAP/4.0#" xml:base="file:dap4/test_simple_5.xml" dapVersion="4.0" dmrVersion="1.0" name="test_simple_5">
    <Int8 name="i"/>
    <Int16 name="j"/>
    <Int32 name="k"/>
    <Int64 name="z"/>
    <Byte name="ui"/>
    <UInt8 name="uii"/>
    <UInt16 name="uj"/>
    <UInt32 name="uk"/>
    <UInt64 name="uz"/>
</Dataset>

<?xml version="1.0" encoding="ISO-8859-1"?>
<Dataset xmlns="http://xml.opendap.org/ns/DAP/4.0#" xml:base="file:dap4/test_simple_5.xml" dapVersion="4.0" dmrVersion="1.0" name="test_simple_5">
    <Int8 name="i">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>12b88320</Value>
        </Attribute>
    </Int8>
    <Int16 name="j">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>6f6d1f7e</Value>
        </Attribute>
    </Int16>
    <Int32 name="k">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>18df6c9e</Value>
        </Attribute>
    </Int32>
    <Int64 name="z">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>0c463091</Value>
        </Attribute>
    </Int64>
    <Byte name="ui">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>ff000000</Value>
        </Attribute>
    </Byte>
    <UInt8 name="uii">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>ff000000</Value>
        </Attribute>
    </UInt8>
    <UInt16 name="uj">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>1cb109fd</Value>
        </Attribute>
    </UInt16>
    <UInt32 name="uk">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>9cf92d00</Value>
        </Attribute>
    </UInt32>
    <UInt64 name="uz">
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>2144df1c</Value>
        </Attribute>
    </UInt64>
</Dataset>

The data:
{ 127, 32000, 123456789, 72057594037927935, 255, 255, 64000, 4026531840, 18446744073709551615 }